Soldato
So, basically just spent a couple of hours testing what happens when I crank up my pump from minimum to maximum (I don't know what minimum and maximum actual rates are as I don't have a flow meter)... however maybe someone can give me the specs of my pump, I never bothered finding out when I bought it lol.
So, this testing was performed in a customer loop with the following core elements:
Water Pump: Barrow Water-cooling DDC Pump, PWM Combination Pumps, LRC 2.0 RGB (not connected to PWN, manually controlled)
CPU Waterblock: Barrow CPU Water Block use for Intel X99 X299 Socket LGA2011 2066 Acrylic AURA RGB Light Copper Radiator Block (LTYK3X-04-V2)
GPU Waterblock: Eisblock Aurora Plexi GPX-A AMD Radeon RX 5700/5700XT Water Block
Waterloop Coolant: 1.5 litres approx of EK-Cryo Fuel Clear Premix Water-cooling Fluid
Radiators: 1x360mm and 2x240mm Radiators
Manual Water Temp: (although my inline was usually 1C higher than I recorded with the manual temp gauge physically stuck in the water at the filler cap)
So the room is pretty much set to 24.1C during all testing and the water is around 27-28 during all testing and I left each run for about 10 minutes to keep skewing the results with water temps etc... so, it's not an exact science, but it's as accurate as I could do in the time allowed and I ensured that the water temp was down to 27.5C before I started the next test! Also, I've picked the most strenuous testing simply to MAX out both CPU and GPU which then tests the efficiency of my loop inclusive of the radiator maximums just icnase they effect things.
So, obviously when in idle, whether the pump is on maximum or minimum, the temps really don't differ at all!!! So, here's the testing! I recorded all temperatures through HWiNFO64 which gives you current, maximum and average temps on all compenents.
2. GPU ONLY Maximum Water Flow: GPU Core Max = 69.0C, GPU Hot Spot Max = 82.0C3
3. CPU ONLY Minimum Water Flow: CPU Package Max = 93C
4. CPU ONLY Maximum Water Flow: CPU Package Max = 88C
5. GPU & CPU with Minimum Water Flow: GPU Core Max = 79.0C, GPU Hot Spot Max = 89.0C,
So can we draw a conclusion from this? Well with my system and my config yes I think we can conclude that during all tests increasing the water flow decreases both GPU, CPU with both CPU/GPU running to their absolute maximum. Is this a surprise? Probably not, as I'd expect that the minimum on this pump is so low that either the GPU or CPU could in theory saturate the water greatly enough around the blocks because the pump isn't pulling that hot water away quite quickly enough so therefore it starts to build and once that water temp near the CPU/GPU heats up the actually elements heat as well??? It's kind of what I'm seeing possibly?
Also, I know these temps on the CPU look high but bear in mind, the CPU is an 8 core Xeon overclocked from 3.0ghz to 4.6ghz and the GPU is running maximum allowed values of 2200/1900 on core and memory with 1.200v maxed so... this is gonna generate a lot of heat and the testing i've done here is absolute mental and would never ever occur in real life. Anyone don't believe me, then test your kit using AIDA64 with the FPU only selected on a stress test, it's a system killer but great for stability testing lol. You'll see way higher temps recorded than you will ever get in real life. In gaming my CPU's are sitting in the 50-60's and the GPU is around the same as above actually in gaming so not much difference there.
So, what's everyones thoughts on this, don't get me wrong this is NOT an exact science BUT I've been as controlled as I can! Was good to just actually see for myself how it effects as I've heard a lot of differing opinions... and everyones systems will be different.
However guys, if you ran the same tests as me and published your results, would be interesting to compare?
EDIT:
Ok, as an amendment and looking at temps, the one thing that occured to me (and from a comment to this thread so cheers it's all good), I've not, since building this loop 4 weeks plus, re-tightened everything up i.e. the block on the GPU or the CPU and it does reccomend this for obvious reasons i.e. the thermal paste is now working properly and everything settles down and I could tighten the screws on both getting a better contact... so, I just re-ran the flow tests again with new results in RED: NOTE, the water delta is exactly 3C cooler today than yesterday so you can't really compare yesterdays original results with the updated results today, but you CAN compare everything in red as that was all done today and based on same water temps...
... and this show the same thing, in my system water flow DOES make a difference to CPU and GPU temps... by around 3C on the maximums and averages... I can also conclude that I do believe even though it's hard to compare now as my water delta was lower today that tightening up the blocks HAS made a better connection and is conducting heat a little better as well but that's up for debate.
I'd also conclude that running both the CPU and the GPU at the SAME time, obvously inceases temps on both which seems an obvious statement, however is true lol. And yes the GPU may seem high temps, but it's an 5700XT which top at 110C on the hot spot as per AMD spec, hence why people undervolt them to keep temps down, however, they dont' run like nvidia cards or AMD 570's and 580's etc they run HOT.
1. GPU ONLY Minimum Water Flow: GPU Core Max = 72.0C, GPU Hot Spot Max = 87.0C GPU Core Max = 65.0C, GPU Hot Spot Max = 79.0C (post tightening of block)
2. GPU ONLY Maximum Water Flow: GPU Core Max = 69.0C, GPU Hot Spot Max = 82.0C GPU Core Max = 63.0C, GPU Hot Spot Max = 76.0C (post tightening of block)
3. CPU ONLY Minimum Water Flow: CPU Package Max = 93C, (CPU Package Max = 91C post tightening of block)
4. CPU ONLY Maximum Water Flow: CPU Package Max = 88C (CPU Package Max = 87C post tightening of block)
5. GPU & CPU with Minimum Water Flow: GPU Core Max = 79.0C, GPU Hot Spot Max = 89.0C, (GPU Core Max = 72.0C, GPU Hot Spot Max = 85.0C, post tightening of the blocks)
6. GPU & CPU with Maximum Water Flow: GPU Core Max = 72.0C, GPU Hot Spot Max = 86.0C, (GPU Core Max = 68.0C, GPU Hot Spot Max = 77.0C, post tightening of the blocks)
So, this testing was performed in a customer loop with the following core elements:
Water Pump: Barrow Water-cooling DDC Pump, PWM Combination Pumps, LRC 2.0 RGB (not connected to PWN, manually controlled)
CPU Waterblock: Barrow CPU Water Block use for Intel X99 X299 Socket LGA2011 2066 Acrylic AURA RGB Light Copper Radiator Block (LTYK3X-04-V2)
GPU Waterblock: Eisblock Aurora Plexi GPX-A AMD Radeon RX 5700/5700XT Water Block
Waterloop Coolant: 1.5 litres approx of EK-Cryo Fuel Clear Premix Water-cooling Fluid
Radiators: 1x360mm and 2x240mm Radiators
Manual Water Temp: (although my inline was usually 1C higher than I recorded with the manual temp gauge physically stuck in the water at the filler cap)
So the room is pretty much set to 24.1C during all testing and the water is around 27-28 during all testing and I left each run for about 10 minutes to keep skewing the results with water temps etc... so, it's not an exact science, but it's as accurate as I could do in the time allowed and I ensured that the water temp was down to 27.5C before I started the next test! Also, I've picked the most strenuous testing simply to MAX out both CPU and GPU which then tests the efficiency of my loop inclusive of the radiator maximums just icnase they effect things.
So, obviously when in idle, whether the pump is on maximum or minimum, the temps really don't differ at all!!! So, here's the testing! I recorded all temperatures through HWiNFO64 which gives you current, maximum and average temps on all compenents.
- For tests 1 and 2 for the GPU, Heaven Benchmark was ran for 5 complete loops then the maximums were recorded.
- For tests 3 and 4 for the CPU, AIDA64 with only the FPU testing was ran for exactly 5 minutes for the CPU (I chose this rather than other tests as FPU calculations absolutely hammer ANY system rather than just CPU normal stress testing that don't use FPU. The temps are around 15C higher using FPU calcs than a mixture or non FPU so, I wanted absolute maximum to test against
- For tests 5 and 6 which was a combination running both CPU and GPU at the same time, AIDA64 was ran as long as the 5 heaven cycles took which I didn't time and just left sitting there, but they ran for the same time so this is absolute worst case scenario which tbh would never happen in real life where you're maxing a CPU with FPU testing maxing 100% and maxing a GPU at 97-99%... however suppose it's nice to see if the loop can handle the huge heat generated with everything on maximum:
2. GPU ONLY Maximum Water Flow: GPU Core Max = 69.0C, GPU Hot Spot Max = 82.0C3
3. CPU ONLY Minimum Water Flow: CPU Package Max = 93C
4. CPU ONLY Maximum Water Flow: CPU Package Max = 88C
5. GPU & CPU with Minimum Water Flow: GPU Core Max = 79.0C, GPU Hot Spot Max = 89.0C,
- CPU Core 0 = 95C
- CPU Core 1 = 97C
- CPU Core 2 = 98C
- CPU Core 3 = 85C
- CPU Core 4 = 86C
- CPU Core 5 = 97C
- CPU Core 6 = 96C
- CPU Core 7 = 93C
- Overall Average = 93.38C
- CPU Core 0 = 93C
- CPU Core 1 = 94C
- CPU Core 2 = 91C
- CPU Core 3 = 82C
- CPU Core 4 = 84C
- CPU Core 5 = 94C
- CPU Core 6 = 92C
- CPU Core 7 = 90C
- Overall Average = 90.00C
So can we draw a conclusion from this? Well with my system and my config yes I think we can conclude that during all tests increasing the water flow decreases both GPU, CPU with both CPU/GPU running to their absolute maximum. Is this a surprise? Probably not, as I'd expect that the minimum on this pump is so low that either the GPU or CPU could in theory saturate the water greatly enough around the blocks because the pump isn't pulling that hot water away quite quickly enough so therefore it starts to build and once that water temp near the CPU/GPU heats up the actually elements heat as well??? It's kind of what I'm seeing possibly?
Also, I know these temps on the CPU look high but bear in mind, the CPU is an 8 core Xeon overclocked from 3.0ghz to 4.6ghz and the GPU is running maximum allowed values of 2200/1900 on core and memory with 1.200v maxed so... this is gonna generate a lot of heat and the testing i've done here is absolute mental and would never ever occur in real life. Anyone don't believe me, then test your kit using AIDA64 with the FPU only selected on a stress test, it's a system killer but great for stability testing lol. You'll see way higher temps recorded than you will ever get in real life. In gaming my CPU's are sitting in the 50-60's and the GPU is around the same as above actually in gaming so not much difference there.
So, what's everyones thoughts on this, don't get me wrong this is NOT an exact science BUT I've been as controlled as I can! Was good to just actually see for myself how it effects as I've heard a lot of differing opinions... and everyones systems will be different.
However guys, if you ran the same tests as me and published your results, would be interesting to compare?
EDIT:
Ok, as an amendment and looking at temps, the one thing that occured to me (and from a comment to this thread so cheers it's all good), I've not, since building this loop 4 weeks plus, re-tightened everything up i.e. the block on the GPU or the CPU and it does reccomend this for obvious reasons i.e. the thermal paste is now working properly and everything settles down and I could tighten the screws on both getting a better contact... so, I just re-ran the flow tests again with new results in RED: NOTE, the water delta is exactly 3C cooler today than yesterday so you can't really compare yesterdays original results with the updated results today, but you CAN compare everything in red as that was all done today and based on same water temps...
... and this show the same thing, in my system water flow DOES make a difference to CPU and GPU temps... by around 3C on the maximums and averages... I can also conclude that I do believe even though it's hard to compare now as my water delta was lower today that tightening up the blocks HAS made a better connection and is conducting heat a little better as well but that's up for debate.
I'd also conclude that running both the CPU and the GPU at the SAME time, obvously inceases temps on both which seems an obvious statement, however is true lol. And yes the GPU may seem high temps, but it's an 5700XT which top at 110C on the hot spot as per AMD spec, hence why people undervolt them to keep temps down, however, they dont' run like nvidia cards or AMD 570's and 580's etc they run HOT.
1. GPU ONLY Minimum Water Flow: GPU Core Max = 72.0C, GPU Hot Spot Max = 87.0C GPU Core Max = 65.0C, GPU Hot Spot Max = 79.0C (post tightening of block)
2. GPU ONLY Maximum Water Flow: GPU Core Max = 69.0C, GPU Hot Spot Max = 82.0C GPU Core Max = 63.0C, GPU Hot Spot Max = 76.0C (post tightening of block)
3. CPU ONLY Minimum Water Flow: CPU Package Max = 93C, (CPU Package Max = 91C post tightening of block)
- CPU Core 0 = 90C (90C post tightening of block)
- CPU Core 1 = 92C (89C post tightening of block)
- CPU Core 2 = 93C (91C post tightening of block)
- CPU Core 3 = 82C (79C post tightening of block)
- CPU Core 4 = 83C (80C post tightening of block)
- CPU Core 5 = 93C (90C post tightening of block)
- CPU Core 6 = 93C (89C post tightening of block)
- CPU Core 7 = 92C (89C post tightening of block)
- Overall Average = 89.75C (87.12C post tightening of block)
4. CPU ONLY Maximum Water Flow: CPU Package Max = 88C (CPU Package Max = 87C post tightening of block)
- CPU Core 0 = 88C (86C post tightening of block)
- CPU Core 1 = 87C (86C post tightening of block)
- CPU Core 2 = 88C (88C post tightening of block)
- CPU Core 3 = 83C (76C post tightening of block)
- CPU Core 4 = 84C (78C post tightening of block)
- CPU Core 5 = 88C (87C post tightening of block)
- CPU Core 6 = 88C (87C post tightening of block)
- CPU Core 7 = 87C (84C post tightening of block)
- Overall Average = 86.62C (84.00C post tightening of block)
5. GPU & CPU with Minimum Water Flow: GPU Core Max = 79.0C, GPU Hot Spot Max = 89.0C, (GPU Core Max = 72.0C, GPU Hot Spot Max = 85.0C, post tightening of the blocks)
- CPU Core 0 = 95C (92C post tightening of block)
- CPU Core 1 = 97C (92C post tightening of block)
- CPU Core 2 = 98C (95C post tightening of block)
- CPU Core 3 = 85C (82C post tightening of block)
- CPU Core 4 = 86C (84C post tightening of block)
- CPU Core 5 = 97C (94C post tightening of block)
- CPU Core 6 = 96C (93C post tightening of block)
- CPU Core 7 = 93C (91C post tightening of block)
- Overall Average = 93.38C (90.38C post tightening of block)
6. GPU & CPU with Maximum Water Flow: GPU Core Max = 72.0C, GPU Hot Spot Max = 86.0C, (GPU Core Max = 68.0C, GPU Hot Spot Max = 77.0C, post tightening of the blocks)
- CPU Core 0 = 93C (89C post tightening of block)
- CPU Core 1 = 94C (90C post tightening of block)
- CPU Core 2 = 91C (92C post tightening of block)
- CPU Core 3 = 82C (80C post tightening of block)
- CPU Core 4 = 84C (82C post tightening of block)
- CPU Core 5 = 94C (91C post tightening of block)
- CPU Core 6 = 92C (90C post tightening of block)
- CPU Core 7 = 90C (88C post tightening of block)
- Overall Average = 90.00C (87.75C post tightening of block)
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