KHX4000 wont even boot at 230!

[Viper87227]

I had 512MB of corsair value and decided it was time to get a gig. When I rran the valueram, I would run my system at 275x8 with a mem divider. The ram was running 225 @ 1.8v. Everything was totallly stable. I get my gig of KHX4000, rated to run at 250fsb at 3-4-4-8. I am at the stock timings, 1.8v, and the system wont even boot at 230. I can post and windows starts to load, but I never get to my OS. At 225, i can boot, but prime95 fails after a minute. Why is my valueram outperforming this ram?

A64 2800+
Abit KV8 Pro
1GB KHX4000
6800 Ultra

 

[cryptonomicon]

going from one stick to two I assume

 

[Viper87227]

going from one to two is what I thought also, but damnit if that causes $300 memory to perform under $140 memory. I just dont see how that coudl matter. If they sell it is a dual kit to run at that speed it shoudl run at that speed with both sticks.

Also, just for the hell of it, I put it down to one stick, and I coudl get it to boot to windows at 230, then windows would crash imeaditly. 235 woudlnt post. Cannot be an issue with the # of sticks.

 

[JohnAn2112]

How many volts are you giving your RAM? I have the PC4000 Kingston HyperX and I believe it's rated for 2.7 volts. Also, did you clear your CMOS before installing the new memory?

 

[Viper87227]

its rated 2.6, im running 2.8 (and MBM5 is reporting in at 2.88v) so its got enough juice. And yes I cleared my CMOS....many times thus far.

 

[cbehnken]

What's your command rate? 1T or 2T? Set it to 2T and see if it works for you..

 

[Viper87227]

is that going to hurt performance. THe ram is rated at 1T, and shoudl run at that. Looks like kingston will RMA it for a refund tho, im going to try and find some BH5.

 

[cbehnken]

Yes, switching to 2T will hurt performance, but I didn't know your ram was rated for it...

 

[Viper87227]

no, its 1t. On the bright side, I am just sedning it back to the person I got it from, who has graciously offered to take it back and handle the RMA himself. I found some BH-5 for the same price, so Ill still to my DDR400 speeds and enjoy 2-2-2-5 goodness.