Soldato
Quickly following on from Gibbo's first round, we have round 2 which is ideal for matching with your round 1 purchase.
Arctic Cooling Freezer 7 Pro Rev 2 CPU Cooler (Socket 939 / AM2 / AM3 / 775 / 1155/ 1156 / 1366) @ £17.99 inc VAT
The Freezer 7 Pro Rev.2 is the upgraded version of the renowned Freezer 7 Pro. With the flexible mounting design, this version is compatible with the Intel Core i7, Core i5, as well as AMD Socket AM3. Featuring an ultra quiet 92mm fan and 6 heatpipes, the Freezer 7 Pro Rev.2 is one of the most efficient and quiet CPU coolers for power users.
The unique heatsink design consists of 42 fins, which significantly increase the heat dissipation area to distribute massive amount of heat faster and more efficient. Featuring a 92mm PWM fan , 6 heatpipes and pre-applied ARCTIC MX-2.,the Freezer 7 Pro Rev.2 offers performance far beyond stock coolers and achieves 130 Watts cooling capacity – becoming one of the most efficient CPU coolers for power users.
- Compatable Sockets: 939 /AM2 /AM2+ / 775 / 1155/ 1156 / 1366
- Compatible with Intel Core i7 and Core i5, as well as AMD sockets
- Excellent cooling performance - 130 Watts
- Ultra quiet 92mm PWM fan
- 6 heatpipes and 42 fins for efficient heat dissipation
- Patented vibration absorption to eliminate buzzing sounds
- Pre-applied ARCTIC MX-2
- Easy installation
Was £19.99 Inc. VAT
Only £17.99 inc VAT.
ORDER NOW
Corsair A50 High-Performance CPU Cooler (Socket AM2/AM3/LGA775/LGA1155/LGA1156/LGA1366) @ £29.99 inc VAT
nonl2brExcessive heat is the deadly enemy of high-performance silicon, and the Air Series A50 CPU cooler can extend the lifetime of your CPU by quietly and efficiently drawing that heat away. You’ll get faster performance, too. Intel Core™ i5 and Core™ i7 processors can be easily configured to automatically overclock when conditions are right. Lowering your CPU’s operating temperature one of the best ways to do this – your CPU will detect that it’s running cooler, and instantly boost its speed when you need it. Of course, if you’re not using a Core i5 or Core i7 or if you prefer to adjust your overclocking settings manually, the Air Series A50 will give you the temperature headroom you need.<br>
The superior engineering of the Air Series A50 makes it dramatically outperform your CPU’s stock heatsink: three 8mm copper heatpipes directly contact your CPU and instantly pull heat up into the aluminum cooling fins. A 120mm fan, mounted on rubber studs to reduce noise and vibration, quietly draws cool air through the fins.<br>
Spend 15 minutes replacing your CPU’s stock heatsink and enjoy years of better performance.<br><br>
- Compatible with Intel and AMD systems<br>
- Three 8mm copper direct-contact heatpipes<br>
- Aluminum fins<br>
- Low-noise, low-vibration 120mm fan mounted on rubber studs<br>
- Selectable 1,600 or 2,000RPM fan allows you to select the cooling performance you want<br>
- Air flow: 50 - 61 CFM<br>
- Noise level: 26 - 31.5 dBA<br>
- Two-year warranty<br>
Was £33.99 Inc. VAT
Only £29.99 inc VAT.
ORDER NOW
Corsair Hydro H50-1 High-Performance CPU Watercooler (Socket LGA775/1155/1156/1366/AM2/AM3) @ £52.99 inc VAT
The Corsair Hydro Series™ H50 CPU Cooler gives you the power of liquid cooling in a compact, easy to install package. You get superior cooling for higher overclocking performance without the complexity of traditional liquid-cooling systems.
The Hydro Series H50 goes head-to-head with top of the line heatsinks, but maintains the near silence of liquid cooling for annoyance-free cooling performance. Due to its compact form factor, the H50 is the ideal solution for any case with a 120mm fan mount, even small form factor cases that prevent the installation of traditional heatpipe based air coolers. So whether you want world-class cooling, lower noise levels than your current CPU cooler, or something that fits in your small form factor case, the closed-loop Hydro Series H50 takes your CPU’s temperature to new lows and takes up less room doing it.<br><br>
- Pre-filled, closed-loop system is easy to install
- Copper CPU cooling plate for maximum cooling performance
- Integrated pump and reservoir is sealed for zero maintenance and improved leakage protection
- Large 120mm radiator for fast heat dispersion
- High-efficiency, low-noise 120mm fan for drawing cool air across the radiator
- Two-year warrantY
Was £57.99 Inc. VAT
Only £52.99 inc VAT.
ORDER NOW
Titan Fenrir Evo CPU Cooler (Socket LGA775/LGA1156//LGA1366/AMD K8/AM2/AM2+/AM3) @ £32.99 inc VAT
Compare with the 1st version, the FENRIR EVO, TTC-NK85TZ/CS2 (RB), features a powerful fan with nine kukri-shaped blades for maintaining a lower noise level at 15dBA only. It is highly recommended to the gamers looking for overclocking potential and an improved hushed operation. The all-in-one socket support is compatible with most Intel and AMD systems.
The War Machine, FENRIR EVO, utilizes unique plating technology to create dual-color gradation of heatsink allowing you to build your own cooling platform.
- 4 x 8mm heatpipes with Heat Pipe Direct Contact feature: for rapider heat conductivity
- 12cm ultra-silent fan with nine kukri-shaped blades
- Newly revamped fan is perfect for comprehensive cooling capacity and extremely noiseless operation at 15 dBA only
- PWM intelligent fan controller: provides an excellent balance between high and low speed
- High density fin design: large surface for heat dissipation while overclocking
- All-in-one socket support: compatible with Intel LGA 775/LGA1155/LGA1156/LGA1366 and AMD K8/AM2/AM2+/AM3 systems
** Warning the heatsink may not fit all SandyBridge motherboards due to the low clearance height of the buttom of the fins.
Was £36.99 Inc. VAT
Only £32.99 inc VAT.
ORDER NOW
Akasa AK-FN057 Apache Super Silent 120mm Fan - 4 Pin PWM @ £8.99 inc VAT
Super silent 12cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. The greater performance combined with PWM automatic speed control allows the fan noise to be kept to a minimum. The Apache fan creates more focused airflow providing blind-spot cooling, which makes it an ideal solution for a case or heatsink fan. HDB (Hydro Dynamic) bearings extend fan life and further enhance noise reduction. IP54 military standard ensures the fan is dust and moisture resistant. It’s powerful, quiet and tough!
PWM is a widely available feature on all current Intel and AMD platform based motherboards. It is more accurate than voltage regulation, energy saving and a fully automatic way of controlling the fan speed. PWM provides ultra quiet acoustics during normal PC use and high performance cooling under high system load. The Optional Akasa AK-CB002 cable adapter can provide the system with two additional PWM connectors if needed.
- Super silent APACHE fans in camouflage colours
- S-FLOW fan blade design delivers 30% higher airflow
- IP-54 military standard moisture and dust protection
- Super silent with PWM auto speed control
- Hydro Dynamic Bearing extends fan life up to 50,000 hours
- Dimension 120 X 120 X 25mm
- Bearing HDB (Hydro Dynamic Bearing)
- Speed 600 -1300 RPM
- Max airflow 57.53 CFM (97.74 m3/h)
- Sound level 6.9 -16.05 dB(A)
- Max static air pressure 26.40 mm-H2O
- Rated voltage 12V
- Connector PWM-4pin
Was £10.99 Inc. VAT
Only £8.99 inc VAT.
ORDER NOW
Coolermaster 120mm Fan - Black @ £4.99 inc VAT
Case cooling is becoming more essential these days. The better airflow inside your system, the cooler and more stable system you will get. This fan provides Silent operation and higher air flow to enhance cooling performance.
- Dimension (W / H / D): 120x120x25mm
- Speed (R.P.M.): 1200 R.P.M. ± 10%
- Air Flow (CFM): 44.03 CFM ± 10%
- Air pressure (mmH2O): 1.83 mm H2O ± 10%
- Fan Noise Level (dB-A): 19.8 dBA
- Weight: 120g
- Bearing Type: Sleeve
- Fan Life Expectancy: 30,000 hours
- Connector: 4 pin
- Cable Length: 300mm
Was £5.99 Inc. VAT
Only £4.99 inc VAT.
ORDER NOW
Akasa AK-274CG-4GNS 120mm Green LED Fan @ £8.99 inc VAT
his is an ultra quiet 12cm case fan delivering high air volumes with an incredible acoustic performance of only 17.5dB(A). The bright Green illumination is achieved by four hi-bright green LED complemented with a crystal green frame and blades.
- Application PC Case fan
- Frame dimension 120 x 120 x 25mm
- Fan speed 1200 RPM
- Fan airflow 38.4 CFM
- Fan air pressure 1.17 mm H20
- Fan life expectancy 20000/hrs 25ºC
- Bearing type Sleeve Bearing
- Connector 3-pin with RPM sensor wire
- Voltage rating 12V
- Current rating 0.15 A
- Noise level 17.5 dB(A)
- Product code AK-274CG-4GNS
Was £10.99 Inc. VAT
Only £8.99 inc VAT.
ORDER NOW
Sharkoon Silent Eagle 2000 120mm Fan - 3/4 Pin @ £10.99 inc VAT
In comparison with conventional fans the unique surface structure of the Silent Eagle allows an improved airflow - at the same rotation speed. This principle is based on the surface texture of a golf ball, which helps to reduce air resistance and turbulence, resulting in particularly quiet operation while maximizing airflow volume. In addition, the rounded edges of the Silent Eagle's frame offer a markedly improved air intake.
- Dimensions: 120 x 120 x 25mm
- Rated speed: 2000 RPM
- Sound: 36.1 dB(A)
- Air flow: 76.4 CFM
Was £12.99 Inc. VAT
Only £10.99 inc VAT.
ORDER NOW
Zalman ZM-STG1 Super Thermal Grease (3.5g) @ £2.99 inc VAT
Zalman’s new Super Thermal Grease will ensure an excellent thermal connection between the heat source (e.g. CPU) and heatsink. It maximises heat transfer by eliminating minute air gaps caused by the two irregular surfaces. It is conveniently packaged in a bottle which has a brush attached to the cap. This enables easy application and also prevents unnecessary waste of grease. Messy fingers are a thing of the past! The sealed bottle also ensures that the grease is kept fresh for a longer period of time, which is useful because one bottle of ZM-STG1 will be enough for ten or more applications.
- Gives best possible heat transfer between CPU/GPU and heatsink
- Easy to apply using included brush
- Good for up to ten applications
- Thermal conductivity of 4W/mK
Was £6.12 Inc. VAT
Only £2.99 inc VAT.
ORDER NOW
IC Diamond 24-Carat Thermal Compound (4.8g) @ £12.98 inc VAT
IC Diamond out performs all other compounds in independent user testing amoung the popular brands tested, IC Diamond contains 92% pure syntheic Diamond. Purified synthetic diamond has a thermal conductivity of 2,000-2,500 W/mKL compared to 406-429 W/mK for pure silver. IC Diamond is electrically none-conductive and none-capacitive providing protection for electrical components when used.
IC Diamonds exceptional durability is due to its high bulk loading of micronized diamond particles. Each tube of IC Diamond contains over 92% micronized diamond and ais 94% fully loaded counting other miscellaneous particles. This highly loaded mix (90% + Bulk loading) is recommended by chip manufacturers to limit pump out due to thermal cycling.
IC Diamond is a stand out amonst all compounds by providing both high performance and long term reliability. Lightly loaded or creme type pastes initially provide some preformance, however the effect can be transitory, sometimes only lasterin a couple of weeks or months. You are safe in the knowledge that IC Diamond thermal conductivity lasts forever.
Based on Independent tests IC Diamond performs 2.77°C better than OCZ Freeze, 3.28°C better than Arctic Cooling MX-3, 3.38°C better than Arctic Silver 5 and 4.74°C better than the Intel generic paste.
- Each tube of IC Diamond Thermal grease contains 7 carats of micronized diamond with diamond particle loadings @ 94% by weight. Material loading above 90% is recommended as the best combination of rheological and thermal properties to minimize interface pump out due to thermal cycling.
- Superior bulk conductivity
- Excellent thermal impedance
- Tight particle distributions
- < 40 µ maximum particle diameter
- Silicone free
- Lower viscosity
- Greater stability
- Non capacitive or electrically conductive
Was £14.99 Inc. VAT
Only £12.98 inc VAT.
ORDER NOW
Arctic Cooling Freezer 7 Pro Rev 2 CPU Cooler (Socket 939 / AM2 / AM3 / 775 / 1155/ 1156 / 1366) @ £17.99 inc VAT
The Freezer 7 Pro Rev.2 is the upgraded version of the renowned Freezer 7 Pro. With the flexible mounting design, this version is compatible with the Intel Core i7, Core i5, as well as AMD Socket AM3. Featuring an ultra quiet 92mm fan and 6 heatpipes, the Freezer 7 Pro Rev.2 is one of the most efficient and quiet CPU coolers for power users.
The unique heatsink design consists of 42 fins, which significantly increase the heat dissipation area to distribute massive amount of heat faster and more efficient. Featuring a 92mm PWM fan , 6 heatpipes and pre-applied ARCTIC MX-2.,the Freezer 7 Pro Rev.2 offers performance far beyond stock coolers and achieves 130 Watts cooling capacity – becoming one of the most efficient CPU coolers for power users.
- Compatable Sockets: 939 /AM2 /AM2+ / 775 / 1155/ 1156 / 1366
- Compatible with Intel Core i7 and Core i5, as well as AMD sockets
- Excellent cooling performance - 130 Watts
- Ultra quiet 92mm PWM fan
- 6 heatpipes and 42 fins for efficient heat dissipation
- Patented vibration absorption to eliminate buzzing sounds
- Pre-applied ARCTIC MX-2
- Easy installation
Was £19.99 Inc. VAT
Only £17.99 inc VAT.
ORDER NOW
Corsair A50 High-Performance CPU Cooler (Socket AM2/AM3/LGA775/LGA1155/LGA1156/LGA1366) @ £29.99 inc VAT
nonl2brExcessive heat is the deadly enemy of high-performance silicon, and the Air Series A50 CPU cooler can extend the lifetime of your CPU by quietly and efficiently drawing that heat away. You’ll get faster performance, too. Intel Core™ i5 and Core™ i7 processors can be easily configured to automatically overclock when conditions are right. Lowering your CPU’s operating temperature one of the best ways to do this – your CPU will detect that it’s running cooler, and instantly boost its speed when you need it. Of course, if you’re not using a Core i5 or Core i7 or if you prefer to adjust your overclocking settings manually, the Air Series A50 will give you the temperature headroom you need.<br>
The superior engineering of the Air Series A50 makes it dramatically outperform your CPU’s stock heatsink: three 8mm copper heatpipes directly contact your CPU and instantly pull heat up into the aluminum cooling fins. A 120mm fan, mounted on rubber studs to reduce noise and vibration, quietly draws cool air through the fins.<br>
Spend 15 minutes replacing your CPU’s stock heatsink and enjoy years of better performance.<br><br>
- Compatible with Intel and AMD systems<br>
- Three 8mm copper direct-contact heatpipes<br>
- Aluminum fins<br>
- Low-noise, low-vibration 120mm fan mounted on rubber studs<br>
- Selectable 1,600 or 2,000RPM fan allows you to select the cooling performance you want<br>
- Air flow: 50 - 61 CFM<br>
- Noise level: 26 - 31.5 dBA<br>
- Two-year warranty<br>
Was £33.99 Inc. VAT
Only £29.99 inc VAT.
ORDER NOW
Corsair Hydro H50-1 High-Performance CPU Watercooler (Socket LGA775/1155/1156/1366/AM2/AM3) @ £52.99 inc VAT
The Corsair Hydro Series™ H50 CPU Cooler gives you the power of liquid cooling in a compact, easy to install package. You get superior cooling for higher overclocking performance without the complexity of traditional liquid-cooling systems.
The Hydro Series H50 goes head-to-head with top of the line heatsinks, but maintains the near silence of liquid cooling for annoyance-free cooling performance. Due to its compact form factor, the H50 is the ideal solution for any case with a 120mm fan mount, even small form factor cases that prevent the installation of traditional heatpipe based air coolers. So whether you want world-class cooling, lower noise levels than your current CPU cooler, or something that fits in your small form factor case, the closed-loop Hydro Series H50 takes your CPU’s temperature to new lows and takes up less room doing it.<br><br>
- Pre-filled, closed-loop system is easy to install
- Copper CPU cooling plate for maximum cooling performance
- Integrated pump and reservoir is sealed for zero maintenance and improved leakage protection
- Large 120mm radiator for fast heat dispersion
- High-efficiency, low-noise 120mm fan for drawing cool air across the radiator
- Two-year warrantY
Was £57.99 Inc. VAT
Only £52.99 inc VAT.
ORDER NOW
Titan Fenrir Evo CPU Cooler (Socket LGA775/LGA1156//LGA1366/AMD K8/AM2/AM2+/AM3) @ £32.99 inc VAT
Compare with the 1st version, the FENRIR EVO, TTC-NK85TZ/CS2 (RB), features a powerful fan with nine kukri-shaped blades for maintaining a lower noise level at 15dBA only. It is highly recommended to the gamers looking for overclocking potential and an improved hushed operation. The all-in-one socket support is compatible with most Intel and AMD systems.
The War Machine, FENRIR EVO, utilizes unique plating technology to create dual-color gradation of heatsink allowing you to build your own cooling platform.
- 4 x 8mm heatpipes with Heat Pipe Direct Contact feature: for rapider heat conductivity
- 12cm ultra-silent fan with nine kukri-shaped blades
- Newly revamped fan is perfect for comprehensive cooling capacity and extremely noiseless operation at 15 dBA only
- PWM intelligent fan controller: provides an excellent balance between high and low speed
- High density fin design: large surface for heat dissipation while overclocking
- All-in-one socket support: compatible with Intel LGA 775/LGA1155/LGA1156/LGA1366 and AMD K8/AM2/AM2+/AM3 systems
** Warning the heatsink may not fit all SandyBridge motherboards due to the low clearance height of the buttom of the fins.
Was £36.99 Inc. VAT
Only £32.99 inc VAT.
ORDER NOW
Akasa AK-FN057 Apache Super Silent 120mm Fan - 4 Pin PWM @ £8.99 inc VAT
Super silent 12cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. The greater performance combined with PWM automatic speed control allows the fan noise to be kept to a minimum. The Apache fan creates more focused airflow providing blind-spot cooling, which makes it an ideal solution for a case or heatsink fan. HDB (Hydro Dynamic) bearings extend fan life and further enhance noise reduction. IP54 military standard ensures the fan is dust and moisture resistant. It’s powerful, quiet and tough!
PWM is a widely available feature on all current Intel and AMD platform based motherboards. It is more accurate than voltage regulation, energy saving and a fully automatic way of controlling the fan speed. PWM provides ultra quiet acoustics during normal PC use and high performance cooling under high system load. The Optional Akasa AK-CB002 cable adapter can provide the system with two additional PWM connectors if needed.
- Super silent APACHE fans in camouflage colours
- S-FLOW fan blade design delivers 30% higher airflow
- IP-54 military standard moisture and dust protection
- Super silent with PWM auto speed control
- Hydro Dynamic Bearing extends fan life up to 50,000 hours
- Dimension 120 X 120 X 25mm
- Bearing HDB (Hydro Dynamic Bearing)
- Speed 600 -1300 RPM
- Max airflow 57.53 CFM (97.74 m3/h)
- Sound level 6.9 -16.05 dB(A)
- Max static air pressure 26.40 mm-H2O
- Rated voltage 12V
- Connector PWM-4pin
Was £10.99 Inc. VAT
Only £8.99 inc VAT.
ORDER NOW
Coolermaster 120mm Fan - Black @ £4.99 inc VAT
Case cooling is becoming more essential these days. The better airflow inside your system, the cooler and more stable system you will get. This fan provides Silent operation and higher air flow to enhance cooling performance.
- Dimension (W / H / D): 120x120x25mm
- Speed (R.P.M.): 1200 R.P.M. ± 10%
- Air Flow (CFM): 44.03 CFM ± 10%
- Air pressure (mmH2O): 1.83 mm H2O ± 10%
- Fan Noise Level (dB-A): 19.8 dBA
- Weight: 120g
- Bearing Type: Sleeve
- Fan Life Expectancy: 30,000 hours
- Connector: 4 pin
- Cable Length: 300mm
Was £5.99 Inc. VAT
Only £4.99 inc VAT.
ORDER NOW
Akasa AK-274CG-4GNS 120mm Green LED Fan @ £8.99 inc VAT
his is an ultra quiet 12cm case fan delivering high air volumes with an incredible acoustic performance of only 17.5dB(A). The bright Green illumination is achieved by four hi-bright green LED complemented with a crystal green frame and blades.
- Application PC Case fan
- Frame dimension 120 x 120 x 25mm
- Fan speed 1200 RPM
- Fan airflow 38.4 CFM
- Fan air pressure 1.17 mm H20
- Fan life expectancy 20000/hrs 25ºC
- Bearing type Sleeve Bearing
- Connector 3-pin with RPM sensor wire
- Voltage rating 12V
- Current rating 0.15 A
- Noise level 17.5 dB(A)
- Product code AK-274CG-4GNS
Was £10.99 Inc. VAT
Only £8.99 inc VAT.
ORDER NOW
Sharkoon Silent Eagle 2000 120mm Fan - 3/4 Pin @ £10.99 inc VAT
In comparison with conventional fans the unique surface structure of the Silent Eagle allows an improved airflow - at the same rotation speed. This principle is based on the surface texture of a golf ball, which helps to reduce air resistance and turbulence, resulting in particularly quiet operation while maximizing airflow volume. In addition, the rounded edges of the Silent Eagle's frame offer a markedly improved air intake.
- Dimensions: 120 x 120 x 25mm
- Rated speed: 2000 RPM
- Sound: 36.1 dB(A)
- Air flow: 76.4 CFM
Was £12.99 Inc. VAT
Only £10.99 inc VAT.
ORDER NOW
Zalman ZM-STG1 Super Thermal Grease (3.5g) @ £2.99 inc VAT
Zalman’s new Super Thermal Grease will ensure an excellent thermal connection between the heat source (e.g. CPU) and heatsink. It maximises heat transfer by eliminating minute air gaps caused by the two irregular surfaces. It is conveniently packaged in a bottle which has a brush attached to the cap. This enables easy application and also prevents unnecessary waste of grease. Messy fingers are a thing of the past! The sealed bottle also ensures that the grease is kept fresh for a longer period of time, which is useful because one bottle of ZM-STG1 will be enough for ten or more applications.
- Gives best possible heat transfer between CPU/GPU and heatsink
- Easy to apply using included brush
- Good for up to ten applications
- Thermal conductivity of 4W/mK
Was £6.12 Inc. VAT
Only £2.99 inc VAT.
ORDER NOW
IC Diamond 24-Carat Thermal Compound (4.8g) @ £12.98 inc VAT
IC Diamond out performs all other compounds in independent user testing amoung the popular brands tested, IC Diamond contains 92% pure syntheic Diamond. Purified synthetic diamond has a thermal conductivity of 2,000-2,500 W/mKL compared to 406-429 W/mK for pure silver. IC Diamond is electrically none-conductive and none-capacitive providing protection for electrical components when used.
IC Diamonds exceptional durability is due to its high bulk loading of micronized diamond particles. Each tube of IC Diamond contains over 92% micronized diamond and ais 94% fully loaded counting other miscellaneous particles. This highly loaded mix (90% + Bulk loading) is recommended by chip manufacturers to limit pump out due to thermal cycling.
IC Diamond is a stand out amonst all compounds by providing both high performance and long term reliability. Lightly loaded or creme type pastes initially provide some preformance, however the effect can be transitory, sometimes only lasterin a couple of weeks or months. You are safe in the knowledge that IC Diamond thermal conductivity lasts forever.
Based on Independent tests IC Diamond performs 2.77°C better than OCZ Freeze, 3.28°C better than Arctic Cooling MX-3, 3.38°C better than Arctic Silver 5 and 4.74°C better than the Intel generic paste.
- Each tube of IC Diamond Thermal grease contains 7 carats of micronized diamond with diamond particle loadings @ 94% by weight. Material loading above 90% is recommended as the best combination of rheological and thermal properties to minimize interface pump out due to thermal cycling.
- Superior bulk conductivity
- Excellent thermal impedance
- Tight particle distributions
- < 40 µ maximum particle diameter
- Silicone free
- Lower viscosity
- Greater stability
- Non capacitive or electrically conductive
Was £14.99 Inc. VAT
Only £12.98 inc VAT.
ORDER NOW