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DDR3>DDR2 Performance Decrease...AMD Hexacore

Can anyone explain what does this mean:

fast ram (e.g. pc2-1066) means you can set the ram speed, low at first, then overclock the fsb (which will increase the ram frequency) e.g
you set the ram to 533 (i.e. 1:1 with fsb) and overclock the fsb to 400, the ram will now be running at 800mhz etc. the key being the ram doesn't exceed it's rated speed and limit your overclock.


I found it on another forum.....from what i understand is that my ram wont be a bottleneck when i overclock my Cpu.
 
And also someone is selling his p45 board ...ASUS P5QC

ITs for pounds 56

is it viable to buy it.....what are my options after buying it????
 
bongas said:
And also someone is selling his p45 board ...ASUS P5QC

ITs for pounds 56

is it viable to buy it.....what are my options after buying it????
Click to expand...


ASUS P5QC LGA775 ATX Motherboard, Intel P45 Chipset, Supports Intel 45nm Multi-Core CPU, DDR3 1333 or DDR2 1066, PCIe 2.0

Intel® P45 chipset
ASUS 8-phase Power Design
Dual-channel DDR3 1333MHz / DDR2 1066 MHz
100% High-quality Japan-made Conductive Polymer Capacitors! (5000hrs VRM, over 5 years operation lifespan)
ASUS EPU-6 Engine
ASUS Express Gate
ASUS Drive Xpert
VRD11.1 CPU support (backward support VRD10.X CPU)
* DDR2 1066MHz DIMMs work only on the black slots for one DIMM per channel.

Specifications

CPU Intel® Socket 775 for Intel® Core™2 Extreme/ Core™2 Quad/ Core™2 Duo/Pentium® dual-core/Celeron® dual-core/Celeron® Processors
Compatible with Intel® 05B/05A/06 processors
Supports Intel® 45nm Multi-Core CPU

Chipset Intel® P45 / ICH10R

Front Side Bus 1600/1333/1066/800 MHz
Memory 2 x DIMM, Max. 8 GB, DDR3 1333/1066/800 Non-ECC,Un-buffered Memory
4 x DIMM, max. 16GB, DDR2 1066 / 800 / 667 MHz, Non-ECC, Un-buffered memory
Dual channel memory architecture
When installing total memory of 4GB capacity or more, Windows® 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended
*DDR2 1066MHz DIMMs work only on the black slots for one DIMM per channel. Ensure to install the DDR2 1066MHz DIMMs ONLY on the BLACK slots!
**Refer to www.asus.com or this user manual for the Memory QVL(Qualified Vendors Lists).
*** When installing total memory of 4GB capacity or more, Windows® 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended.
Expansion Slots 1 x PCIe 2.0 x16
3 x PCIe x1
2 x PCI

Storage Southbridge
6 xSATA 3 Gb/s ports Intel® Matrix Storage Technology Support RAID 0,1,5,10
Marvell 88SE6111
1 x UltraDMA 133/100/66 for up to 2 PATA devices
Silicon Image SIL5723 (Drice Expert Techology)
2 x SATA 3.0 Gb/s
Supports EZ Backup and SuperSpeed functions
LAN PCIe Gigabit LAN controller featuring AI NET2

Audio Realtek ALC 1200, 8 -Channel High-Definition Audio CODEC
DTS Surround Sensation Ultra PC
- Support Jack-Detecting, Multi-Streaming, and Front Panel Jack-Retasking
- Coaxial S/PDIF out ports at back I/O
- ASUS Noise-Filtering

IEEE 1394 1394a controller supports 2 x 1394a ports
USB 12 USB 2.0 ports (6 ports at mid-board, 6 ports at back panel)
ASUS Unique Features ASUS Power Saving Solution:
- ASUS EPU-Six Engine
- ASUS 3rd Generation 8-phase Power Design
- ASUS AI Nap
AI Lifestyle Features:
- Express Gate
- ASUS MyLogo 2
ASUS Quiet Thermal Solution:
- ASUS Fanless Design: Stylish heatsink
- ASUS Fan Xpert
ASUS EZ DIY:
- ASUS Drive Xpert
- ASUS AI Direct Link
- ASUS Q-Shield
- ASUS Q-Connector
- ASUS O.C. Profile
- ASUS CrashFree BIOS 3
- ASUS EZ Flash 2

Overclocking Features ASUS AI Booster
Precision Tweaker 2:
- vCore: Adjustable CPU voltage at 6.25mV increment
- vDIMM: 64-step DRAM voltage control
- vChipset (N.B.): 40-step DRAM voltage control
- vCPUPLL: 64-step reference voltage control
- vFSB Termination: 15-step Hyper Transport voltage control
SFS (Stepless Frequency Selection)
- FSB tuning from 200MHz up to 800MHz at 1MHz increment
- Memory tuning from 667MHz up to 1333MHz for DDR2
- Memory tuning from 800MHz up to 2000MHz for DDR3
- PCI Express frequency tuning from 100MHz up to180MHz at 1MHz increment
Overclocking Protection:
- ASUS C.P.R.(CPU Parameter Recall)
Back Panel I/O Ports 1 x PS/2 Keyboard (Purple)
1 x PS/2 mouse port (Green)
1 x S/PDIF Out (Coaxial)
1 x IEEE1394a
1 x RJ45 port
6 x USB 2.0/1.1
8-channel Audio I/O
Internal I/O Connectors 3 x USB connectors support additional 6 USB ports
1 x Floppy disk drive connector
1 x IDE connector
1 x COM connector
6 x SATA connectors
2 x Drive Xpert SATA connectors
1 x CPU Fan connector
2 x Chassis Fan connector
1 x Power Fan connector
1 x IEEE1394a connector
Front panel audio connector
1 x S/PDIF Out Header
Chassis Intrusion connector
CD audio in
24-pin ATX Power connector
8-pin ATX 12V Power connector
System Panel (Q-Connector)

BIOS 8 Mb Flash ROM
DMI 2.0
AMI BIOS
PnP
WfM 2.0
SM BIOS 2.4

Manageability WOL by PME, WOR by PME, WOR by Ring, Chasis Intrusion, PXE
Accessories 1 x UltraDMA 133/100/66 cable
1 x FDD cable
6 x Serial ATA cables
1 x 2-port Serial ATA power cable
1 x multi-function module ( 1 port eSATA and 1 port 4-pin 1394)
1 x Q-Shield
1 x User's manual
1 x 3 in 1 Q-connector
Support Disc Drivers
ASUS PC Probe II
ASUS Update
ASUS AI Suite
Anti-virus software (OEM version)
Image-Editing Suite

Form Factor ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )
 
Last edited:
bongas said:
hi, again.
Someone is selling his rams :
http://a.imageshack.us/img804/1079/rams2.jpg

its the XMS2 DHX corsair 2 x 2gb kit.
it is under 3 years and 8 months warranty and the price is 62 pounds.

Should i buy it and what will be my options once i buy it?????
Click to expand...

That is PC-6400 and won't give enough of a performance increase over what you have to justify the price.

Can you use eBay?
 
The above motherboard supports DDR3, so may allow you to upgrade to that later, I am sure it will allow you to OC with DDR3 just as well as with PC8500?

I would say it is reasonable for around £50 if in super condition with box IO plate manuals etc? Can get it over here for £75 new.

You could OC your E7400 a little more and play with settings to find your highest stable FSB that works with PC-6400 probably around 3.2ghz with a 333Mhz multi. later upgrading to DDR3 which can go toward an AMD rig later? Used DDR3 1600 4gb kits are around the same price as second hand PC-8500 kits.
 
"* DDR2 1066MHz DIMMs work only on the black slots for one DIMM per channel."

Thats the problem with 1066mhz ddr2 ram.

"2 x DIMM, Max. 8 GB, DDR3 1333/1066/800 Non-ECC,Un-buffered Memory"

And thats the issue of concern if ddr3 rams are used...no OC of DDR3 supported aswell as only 2 diims for dual channel which means that a total of 4GB (2 x 2GB)


the good thing is that its under 1.5 years warranty.

NO CANNOT BUY FROM EBAY< NEWEGG< AMAZON < MICOCENTER.............they dont deliver in Pakistan.(WE lost the US open, this was the first time our country went into the finals of a grandslam tennis championship)(i think we played really well)(it was a doubles match . (pakistani + Indian) vs (bryan brothers "from america" )
 
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bongas said:
"* DDR2 1066MHz DIMMs work only on the black slots for one DIMM per channel."

Thats the problem with 1066mhz ddr2 ram.

"2 x DIMM, Max. 8 GB, DDR3 1333/1066/800 Non-ECC,Un-buffered Memory"

And thats the issue of concern if ddr3 rams are used...no OC of DDR3 supported aswell as only 2 diims for dual channel which means that a total of 4GB (2 x 2GB)


the good thing is that its under 1.5 years warranty.

NO CANNOT BUY FROM EBAY< NEWEGG< AMAZON < MICOCENTER.............they dont deliver in Pakistan.(WE lost the US open, this was the first time our country went into the finals of a grandslam tennis championship)(i think we played really well)(it was a doubles match . (pakistani + Indian) vs (bryan brothers "from america" )
Click to expand...

First of make sure it is an ASUS P5QC P45 and not the P43 or other variant, it apparently does not OC stable above 470mhz but has an easy to use bios and may be capable of up to a 420Mhz FSB giving some OC headroom.

Even with DDR3 you will have a headroom of 1333Mhz, and may still be able to run DDR3 1600Mhz at lower speeds, most memory is capable of being ran below rated speed with tighter timings. I ran DDR2-800 memory rated at 800mhz within a motherboard only capable of utilising DDR2-667 memory, it just ran the memory at a slower speed.

For OC'ing you do not want 4 sticks of ram, 2x2gb seems to be the sweet spot.
 
yes it is P45 chipset, i donot know the OC capabilities of that board...but as it is p45, i hope that it would be a nice OCer.

now coming on ddr3, considering that it only supports a max of 1333mhz , how much will it be able to OC a quad core cpu???? (knowing that the board does not support a ddr3 OC )
 
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It just gives you more headroom in the same way as PC-8500.

I would go for This and compatable DDR3-1600 just because you can get the same settings as PC-8500 with tighter timings, and re-use the DDR3-1600 later when you change platform.

I agree that DDR3-1600 at 1333MHZ seems a bit of a waste, particularly as the board is not stable with an FSB over 470Mhz and your CPU may not enjoy higher multipliers but I am sure it will run just as well as DDR2-PC8500 at 1066mhz?

The DDR 3 is not going to be any better than DDR2 with a 775 processor, it is just that you can use underclocked DDR3-1600 so could buy and try OC'ing with it or using it at 1066mhz while you save for your new AM3 platform or such.

It sort of works out as a stepping stone motherboard just like my old Asrock 4coredual did, when I upgraded from Sempron 3300/socket 462 I was able to use DDR, then later bought DDR2-800 and ran it underclocked until I moved to a P45

The motherboard you mention may be able to run 10x400 with your current memory and give you a 4ghz OC, latency might be high with a 1.1 memory divider but if adding DDR3-1600 later you will have 1333mhz as headroom so more settings to play with. I am sure that the Q9950 with it's 8.5x333 stock multi is fine with DDR2-800?

The OC guides may give usefull info, but the motherboard seems a fine way of getting more out what you have, later adding DDR3 then only having to worry about a CPU/motherboard upgrade later if going for a new platform?

May be worth googling the motherboard to see what people were getting with C2D CPU's and DDR3?
 
i am confused.....why the hell do i need pc8500 rams?????????

please can u clearify something: Is my current ddr2 value RAM a bottleneck for my CPU when i Overclock it ???????????????????????????????

PLEASE NOTE THAT I DO NOT WANT TO OC MY RAM.......I JUST WANT TO OC MY CPU @ 3.7GHz!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

is there any way too keep the ram @800mhz or less and then OC the cpu to 3.7GHz.


MY ram:
kingston ddr2 @800mhz pc6400 value ram ie without heatspreads!
 
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No it wont be a bottleneck. What are you thinking of doing now just getting a better motherboard and overclocking your current cpu and using it until next year when you will then upgrade everything?
 
@Someone , i am planning to buy a used board lga 775 that supports overclocking .(probably a p45 chipset) within the next month .

Then next year (whenever the sandy bridge comes out) i will upgrade to a quad core just by replacing my current chip with a q9400 or a q9550 or whatever comes within the range of pounds 95.

buy a 3rd party cooler most likely a dark knight s1283w and then OC the quad core.

and then (i am still unclear about it) whether to buy a new pair of rams or not.
AGAIN, i do not want to OC my ram just want to OC my CPU , is the value ram a bottleneck for my cpu?????

@Someone...you have OCed your CPU, can you tell me that what was your stock memory speed? was it 1333mhz or 1600MHz ?

if it was 1600MHz, how come that you have OCed your CPU but the ram did not OC itself??????
 
[Off Topic]

bongas,

he has a black edition processor, they are very flexible to overclock with each part controlled by its own upwards/downwards multiplier

AMD® Phenom™ II X6 1090T
  • 16x200=3200MHz
    [*]17x200=3400MHz
    [*]18x200=3600MHz
    [*]19x200=3800MHz
    [*]20x200=4000MHz
    [*]21x200=4200MHz

The memory on AM3 can run at DDR3-1066/1333/1600 as standard . . .

am3stockmemory.gif


The voyages of bongas continues . . . :cool:
 
LOOK AT WHAT BIGWAYNE SAID:

Unless your ram can overclock beyond 400MHz (DDR2-800) the max processor speed you could hope for is about 3.2GHz . . . and that's using sync [1:1] memory ratio which is not optimal . . . if you had 533MHz (DDR2-1066) then you would have more "justification" for spending out on a new LGA775 motherboard . . .


Is this true????
 
bongas my memory is at stock speed. There are memory dividers that you can change in the motherboard bios which set the ram speed. As you increase the fsb & overclock the cpu the ram will also start to be overclocked, but to solve this you go to the ram settings in the bios and select a lower divider which reduces the ram speed so that it is no longer overclocked. Because of this the ram will not limit your overclock.

Will you be overclocking the cpu using the stock cooler?
 
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[Off Topic]

Hello Someone :)

Someone said:
There are memory dividers that you can change in the motherboard bios which set the ram speed
Click to expand...
This is true . . .

Someone said:
As you increase the fsb & overclock the cpu the ram will also start to be overclocked
Click to expand...
This is also true . . .

Someone said:
but to solve this you go to the ram settings in the bios and select a lower divider which reduces the ram speed so that it is no longer overclocked

Because of this the ram will not limit your overclock.
Click to expand...
On an AMD system this is true :)

On an Intel® LGA775 system using an nVidia chipset this is true . . . but sadly on an Intel® LGA775 system using an Intel® chipset this is false! :(
 
Sigh....


If you cannot grasp these basics, or read and understand what is being described, can you get a pre built Dell or such?

A P45 board will allow you more OC headroom, NOT guarantee a stable high OC.

You may get a reasonable stable sufficient OC with DDR2 800, but DDR2 1066 will give you more room to play with with a better chance of success. I have not seen any real reason to worry about 1.1 sync with memory.

DDR3 is pointless if sticking with 775, it may allow you more headroom to OC in the same manner as 1066, but it is only worth buying DDR3-1600 IF you intend to use the board as a stop gap.

A 775 Quad is pointless until you have ran your E7400 OC'd and experience that Dual as a bottle neck when multi tasking or playing games that use four cores, and by then it may be that new platforms are out which cost the same, or less, and perform just as well.
 
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