First time overclock

[no_numb]

If it says the ram is capable of it then its not your fault and you should get replacements

[Kev32]

Will give them a whirl in my brothers PC today to see if they still bring up errors in memtest. If they do and I do RMA then I'm going to sell the replacements and stick with my current overclocked system provided it remains stable which it seems to be doing (CPU passes IBT and memtest86+ has run twice with no errors).

The 4gb from eBuyer is still going strong at it's clock in memtest after 3 passes now. I'm looking forward to having a fairly stable PC when I boot up into windows.

[Kev32]

6 hours on prime95 with overclock in place on just the 4gb. I'm guessing the 4gb that Scan gave me were defective. :/

[Kev32]

Prime95 still running fine after 10 hours. Would I be a fool to put in an additional 4gb of RAM that I got returned from the scan RMA?

[CAT-THE-FIFTH]

Prime95 still running fine after 10 hours. Would I be a fool to put in an additional 4gb of RAM?

Yes.

[Kev32]

Hehe, well I'm loving it. Much prefer a faster CPU/RAM over 8gb RAM.

[CAT-THE-FIFTH]

Hehe, well I'm loving it. Much prefer a faster CPU/RAM over 8gb RAM.

4gb will be fine for the time being!! Most motherboards prefer having only two ram slots being filled when overclocking.

Looks like you need to RMA the RAM back to Scan.

[Kev32]

Hopefully I can get a refund from them rather than a replacement. Otherwise I'll just give the replacement sticks to my brother.

[Kev32]

Okay.

Well here's the story.

Late July my computer starts playing up with random BSOD's during idle/activity. My PC is the same as it says in my system minus the overclocks and at this point I had 4gb of the same DDR2 RAM from ebuyer. After multiple troubleshooting efforts such as flashing the BIOS, testing with memtest86+ in my PC and my brothers I finally got to the solution that one of the modules was riddled with address errors.

So I RMA'd the RAM back to ebuyer for the to check but as I had i37 (the UK 2000 person LAN party) coming up I thought it best if I bought another 4gb of the same DDR2 RAM to replace that RAM whilst I was at the LAN. So I did that, got the RAM put it up to it's 1066mhz DRAM freq with CAS timings of 5.5.5.15 and a voltage of 2.1 and went LANNING. Had absolutely NO problems at LAN.

Earlier this week ebuyer return me 4gb of the same DDR2 RAM except this is the replacement stuff as they too found address errors on the RMA'd RAM. So greedily I whacked it into my PC and kept the DRAM/Timings/Voltages the same. After 45 hours of uptime my PC crashes with a BSOD and refuses to boot into windows constantly BSOD'ing every time it does the green loading bar thing until I revert the BIOS back to defaults.

So I troubleshoot and find no errors on all 8gb with a memtest86+ with the RAM at 800mhz. However, the SCAN stuff finds multiple errors when @ 1066mhz whilst the ebuyer replacement RAM finds none! So I think, bingo problem solved, my SCAN RAM has developed errors some how. Whack the ebuyer stuff in and set it to it's guaranteed settings of 1066mhz/5.5.5.15/2.1v. I then run a prime95 test that lasts 20 hours with no problem. Wake up this morning and turn it off, satisfied, check my emails and the PC crashes with BSOD and refuses to post.

Now whilst this was all happening I checked the Scan RAM on my brothers PC using memtest86+ and after 4 passes it found ZERO ERRORS @ 1066mhz.

And now guess whats happening. Scan RAM passes memtest @ 1066mhz fine on my PC, posts and boots windows with my CPU clocked at 3.2ghz. BUT when I put the ebuyer RAM in now it REFUSES to even POST! Not even if I set the BIOS to default! The ebuyer RAM just DOES NOT WORK IN MY PC ANYMORE. BUT it will work fine in my brothers PC and posts and boots windows @ 1066mhz with NO PROBLEM AT ALL.

Can I conclude that the motherboard is ****ed for lack of a better word and the DIMM slots are either tempermental or the NB is busted?

[CAT-THE-FIFTH]

Okay.

Well here's the story.

Late July my computer starts playing up with random BSOD's during idle/activity. My PC is the same as it says in my system minus the overclocks and at this point I had 4gb of the same DDR2 RAM from ebuyer. After multiple troubleshooting efforts such as flashing the BIOS, testing with memtest86+ in my PC and my brothers I finally got to the solution that one of the modules was riddled with address errors.

So I RMA'd the RAM back to ebuyer for the to check but as I had i37 (the UK 2000 person LAN party) coming up I thought it best if I bought another 4gb of the same DDR2 RAM to replace that RAM whilst I was at the LAN. So I did that, got the RAM put it up to it's 1066mhz DRAM freq with CAS timings of 5.5.5.15 and a voltage of 2.1 and went LANNING. Had absolutely NO problems at LAN.

Earlier this week ebuyer return me 4gb of the same DDR2 RAM except this is the replacement stuff as they too found address errors on the RMA'd RAM. So greedily I whacked it into my PC and kept the DRAM/Timings/Voltages the same. After 45 hours of uptime my PC crashes with a BSOD and refuses to boot into windows constantly BSOD'ing every time it does the green loading bar thing until I revert the BIOS back to defaults.

So I troubleshoot and find no errors on all 8gb with a memtest86+ with the RAM at 800mhz. However, the SCAN stuff finds multiple errors when @ 1066mhz whilst the ebuyer replacement RAM finds none! So I think, bingo problem solved, my SCAN RAM has developed errors some how. Whack the ebuyer stuff in and set it to it's guaranteed settings of 1066mhz/5.5.5.15/2.1v. I then run a prime95 test that lasts 20 hours with no problem. Wake up this morning and turn it off, satisfied, check my emails and the PC crashes with BSOD and refuses to post.

Now whilst this was all happening I checked the Scan RAM on my brothers PC using memtest86+ and after 4 passes it found ZERO ERRORS @ 1066mhz.

And now guess whats happening. Scan RAM passes memtest @ 1066mhz fine on my PC, posts and boots windows with my CPU clocked at 3.2ghz. BUT when I put the ebuyer RAM in now it REFUSES to even POST! Not even if I set the BIOS to default! The ebuyer RAM just DOES NOT WORK IN MY PC ANYMORE. BUT it will work fine in my brothers PC and posts and boots windows @ 1066mhz with NO PROBLEM AT ALL.

Can I conclude that the motherboard is ****ed for lack of a better word and the DIMM slots are either tempermental or the NB is busted?

It could be that you have a buggy BIOS. I had similar memory related issues with my Shuttle 975x based motherboard until I went for an earlier BIOS version and the issues I had disappeared! I would look at what BIOS versions are available and check forums for any known bugs.

I would get 4gb of cheap PC2-6400 RAM and this should have less issues than PC2-8500. You can still overclock your CPU to 3.2ghz which should be enough.

[Kev32]

I'm using the latest BIOS at the moment and after skimming the forums there was one guy who switched back to 0803 after having memory problems with the same memory I'm using. I think I'll give this a shot to start with.

[Kev32]

Well.... I'm going to say I THINK I have found the solution as I seem to have pretty bad kharma by the looks of things.

Basically one of the ebuyer modules is defective. If we call the Scan modules 1 + 2 and the ebuyer modules 3 + 4. With 1 + 2 in on their own PC will boot perfectly fine into windows and so far so good. With 3 + 4 chances are the PC will even post is 50/50 after this morning. With all 4 modules in the PC refuses to post full stop. So basically, I tested as you do, 3 + 4 in seperately on their own. And voila with 4 in on it's own both mine and my brothers PC refused to post. Just switched on and hanged.

This is absolutely bizzare as this faulty module managed to get past memtest86+ and prime95. The only time I got errors in prime95 was when I had all 4 modules in. So obviously there is some gremlin hiding in module 4 that is forced to surface when all DIMM slots are full.

Bloody bizzare problem. Will run my PC at it's overclock with the Scan RAM in until crash OR it works fine. It makes sense that the Scan RAM is fine as it worked well under load for 5 days of uptime over i37. eBuyer on the other hand once again dissapoint me but I can't blame them.

[Kev32]

PC BSOD'd after 3 days of uptime, did a memtest86+ and it returned 56 errors on the RAM (@ 1066mhz/2.1v/5.5.5.15) in the first 5%. Seems to be fine when I set the RAM settings to Auto in the BIOS.

I'm clueless as to what the problem is. This is my 3rd pair of RAM that is not running at it's stated values but at least this RAM seems to work fine at 800mhz and auto CAS timings. This has really cut into my holidays so I think I'll give up for now and just stick with the RAM rather than returning it.

[Blaineoliver]

Have you got command rate at 1T or something?

[Kev32]

Nope it is at 2T. So bizzare. My mate whose got the same 2 sticks of 2x2gb RAM is having equally aggravating problems. RAM doesn't work on my brother's PC either.

I'm afraid I'm going to have to brand Corsair's Dominator XMS2 C5D RAM as very very tempermental. May send this RAM back and do as was suggested earlier in this thread and get a pair of PC6400.

[CAT-THE-FIFTH]

I use Geil Black Dragon PC2-6400 RAM and it works fine in my Shuttle SD37P2 which is VERY picky about which RAM it can use!!