How well does the Corsair DDR2 XMS2 OC?

[jonespwns]

Here is a actual link for the ram. http://www.newegg.com/Product/Product.aspx?Item=N82E16820145184&cm_re=corsair_ddr2_4gb-_-20-145-184-_-Product RIght now im running mixed ram, 2 corsair and 2 kingston. for some reason my mobo does not let the kingston go to its normal 1066, only lets it go to 950mhz without messing up. So i want to OC the corsair to be the same as kingston. would this mess it up?

 

[jaquith]

Welcome to Tom's Forum!

CORSAIR XMS2 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model TWIN2X4096-6400C5

800 MHz 5-5-5-18 @ 1.8v

Q - What Kingston's?

The 'best' solution is not to mix-match RAM especially from two different manufacturers. That said, run CPU-Z and look at the 'SPD' tab and the available JEDEC speeds and voltages. Ideally, you want to find a 'Matching' Frequency, CAS Timings and Voltages.

Blending Example:
800 MHz 5-5-5-18 @ 1.8v ; note the JEDEC timings for '667 MHz' or 667/2 = ~333 MHz **
667 MHz 4-4-4-12 @ 1.8v~1.9v
======================
667 MHz 5-5-5-18 @ 1.8v **


667 MHz 4-5-4-14 @ 1.8v ; 800 MHz JEDEC @ 667 MHz
667 MHz 4-4-4-16 @ 2.0v
==================
667 MHz 4-5-4-16 @ 1.8v~2.0v ; you may need to average the voltage.

The SLOWEST wins of each speed, and 'try' the average voltage, failure raise the voltage. Note: RAM is generally stable +/- 0.2v

 

[jonespwns]

oh ok. thanks! this helped a whole lot!! and this is my kingston http://www.newegg.com/Product/Product.aspx?Item=N82E16820104073&cm_re=kingston_ddr2_4gb-_-20-104-073-_-Product

 

[geekapproved]

So your mixing 2.1v ram with 1.8v ram? Wow, Im surprised it works at all or hasn't blown up yet.

In my past experiences, 2.1v DDR2 won't even load windows at 1.8v. It'll BSOD or Stop error.

 

[jaquith]

800 MHz 5-5-5-18 @ 1.8v TWIN2X4096-6400C5
800 MHz 5-5-5-18 @ 1.8v KHX8500D2K2/4G {Rated = 1066 MHz 5-5-5-15 @ 2.2v}
==================
800 MHz 5-5-5-18 @ 1.8v

You got REALLY lucky for SPD with the Kingston's, at 800 MHz they're rated identical!

edit: see -> http://www.valueram.com/datasheets/KHX8500D2K2_4G.pdf

 

[geekapproved]

Yeah if they will even run at 1.8v.

 

[jaquith]

I had to look at the specs, you know as well as I - all too often the DRAM Voltage needs to be increased sometimes especially as density and number of sticks increases.

My observations as is yours the OP is LUCKY!

 

[jonespwns]

The RAM is working in my computer and everything. So I just got lucky lol