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Memory compatibility with Asus P5Q-E


okeee

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Should I look for Part Number or Memory Type?

Because I can find a similar memory type:

"DDR2-1066 (XMS2-8500C5*4GB*SLI)"

(no idea what sli is..)

but the corresponding part number is different: "TWIN2X4096-8500C5"

 

The RAM I selected was XMS2, not Twin2x.

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Yes I saw these in the list, but are "DDR2-1066 (XMS2-8500C5*4GB*SLI)" and "TWIN2X4096-8500C5" the same or not? Because I checked at the list of a shop and they were listed seperately, but here they seem to be listed as 1 memory?

 

Also, I selected: "Corsair XMS2 - Memory - 4 GB ( 2 x 2 GB ) - DIMM 240- pins - DDR2 - 1066 MHz / PC2-8500 - CL5 - 2.1 V"

So no SLI.. does that matter?

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Ok, the weird thing is this shop sold "Corsair 2GB DDR2 SDRAM PC6400 CL5.0 XMS2" as well as "Corsair 2x1GB DDR2 SDRAM PC6400 CL5.0 TwinX", as seperate memory.

 

IIRC the SLI feature is just an extra chip on the stick but the same ICs.

you should be fine. just make sure you manually key in the timings and voltage in the BIOS :):

What is the timing exactly, is that for example, 1066 MHz?

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Ok, the weird thing is this shop sold "Corsair 2GB DDR2 SDRAM PC6400 CL5.0 XMS2" as well as "Corsair 2x1GB DDR2 SDRAM PC6400 CL5.0 TwinX", as seperate memory.
That's why it's best to use the part numbers. Most likely they're listed somewhere on the page. I'd guess the first one is a 2 GB stick, and the 2nd is two 1 GB sticks.
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IIRC the SLI feature is just an extra chip on the stick but the same ICs.

you should be fine. just make sure you manually key in the timings and voltage in the BIOS :):

 

What is the timing exactly, is that for example, 1066 MHz?

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  • Corsair Employees

You did not see this part?

 

Testing parameters for Twinx/XMS2-8500/C5D:

 

Memory Voltage 2.2 Volts Version 1.x and 2.15 Volts for version 2.x.

Motherboard make and model: Asus P5B or M2N32-SLI Premium/Deluxe Only!

Each pair is tested and packaged together using the following settings:

AI Over Clock Tuner: Manual

OC Operation: Disabled

NOS Operation: Disabled

CPU External Frequency: Manually set to 268 MHz

PCI CLK1: Auto

PCI CLK2: Auto

DDR2 Voltage control: 2.20V Ver 1.x (2.1 Volts for 2.X)

CPU Core Voltage: Auto

CPU Multiplier: 10

DDR2 SDRAM Clock: Manually set to 800MHz

DRAM Timing Selectable: Manual

SDRAM CAS Latency: 5T

SDRAM RAS to CAS Delay (tRCD): 5T

SDRAM Row Precharge (tRP): 5T

SDRAM Active to Precharge Delay (tRAS): 15T

SDRAM Write Recovery Time: 5

1T/2T: 2T

A1 Clock Skew: Auto

ADVANCED Voltage Control:

CPU Vcore offset:-Disabled

DDR2 Termination:-0.5X

CPU to NB HT:_____1.200V

NB to SB HT:______Auto

NB Core/PCI-E:____Auto

SB Core/PCI-E:____Auto

SB Standby core:__+1.500V

All other settings are motherboard defaults.

Maximum DDR2 recommended VDIMM: 2.2 Volts for Rev 1.x and 2.1 Volts for Ver. 2.X

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CAS Latency (tCL): 5

RAS to CAS Delay (tRCD): 5

Row Precharge (tRP): 5

Active to Precharge Delay (tRAS): 15

 

Those are the main timings you'll see. If you look at the memory label you'll see 5-5-5-15. Above is what it's referring to.

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