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post #21 of 26
Most important now that we've talked... knock your memory back down to stock 1600 / 800mhz. Your timings will relax automatically and this is what you want.

When you're overclocking RAM generally there are two ways- either tighten up the timings (7-7-7-20) or increase frequency (1800 / 900mhz) with equal timings. In many cases to make tighter timings stable you need to slightly underclock your ram frequency- especially given that you're new to overclocking I'd keep it stock for now, learn the ropes of the CPU overclock and then play with it.

As it is, you're WAAAAAAAAAAAY overclocked so dropping your RAM voltage won't work. Before you drop your RAM voltage (DIMM) down, you'll need to ensure you've brought your RAM frequency down significantly and relaxed your timings (as it looks like you have).

Also, as I mentioned and this guy above me did too- make sure you drop that IOH timing. It's wayyyyy too high. That 9800 probably needs less than stock.

As for my testing that I talked about- you don't need to do that much testing. Everyone in here gets all anti when someone doesn't do 5 different tests for a million hours... but doing LinX for 50 lines would take about 15 minutes or so... and is a really great overal test. It's an easy set to configure- most of it is automatic. In its stock form it'll test with under a gig of RAM and will hit all threads. It's probably the fastest, most effective program to test your overclock on your CPU.
Edited by Eno75 - 2/19/11 at 4:40pm
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post #22 of 26
Thread Starter 
Here are some screenshots of my most recent changes. I also enabled turbo mode and am using 21x191 right now for a 4GHz overclock. My loaded temps at the pictured VCore voltage are at 80C. I can probably bump it higher, and I may do so since I haven't completely determined if this configuration is stable or not yet.

Are my memory settings the lowest they can be? I don't see how I can underclock my RAM any more than I am already.
post #23 of 26
I'm still not sure if your target CPU frequency means you're DDR rate is 1148 meaning you're running at 550mhz speed or if you're actually set at 2290mhz up from 1600 (stock DDR rate). Judging by the next window over, your target frequency should be 800... not 1148. That will bring you back to stock- which is where you should be.

Also, for overclocking I'd leave turbo mode off- because if you crash you won't be sure if it's at the turbo setting (because it turns on and off) or your actual bios setting.
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post #24 of 26
Thread Starter 
Quote:
Originally Posted by Eno75;12451163 
I'm still not sure if your target CPU frequency means you're DDR rate is 1148 meaning you're running at 550mhz speed or if you're actually set at 2290mhz up from 1600 (stock DDR rate). Judging by the next window over, your target frequency should be 800... not 1148. That will bring you back to stock- which is where you should be.

Also, for overclocking I'd leave turbo mode off- because if you crash you won't be sure if it's at the turbo setting (because it turns on and off) or your actual bios setting.

It's actually 550Mhz, because that's what I'm seeing in the Eleet utility by EVGA. So, I think that to get stock I need to run 2:8, which will give me a target frequency of 1600 at 20x200 with turbo off, which is 4Ghz. As it stands right now, I am running at 1200, where stock is 1600... so my RAM is underclocked.
post #25 of 26
Thread Starter 
Setting my QPI to 6.4GT/s doesn't work. The computer fails to post and I have to do a manual reset of the CMOS.

I have attached a screenshot of Memtest which shows a QPI of 7.1 GT/s, which is odd since I have 4.8 GT/s selected in BIOS. There's some multiplier going on somewhere I guess? I'm not sure.
post #26 of 26
Hmmm strange- unless it's just not got the J for it at 1.3. Mine is currently set at 1.35 for QPI so that might be worth a try. Strange that it wouldn't post outright- I'll have to look a bit further into it I guess. Sorry about the no post thing- that's the risk we take while overclocking.

I need a lot less qpi with my 980s because it's only 1.5xmem frequency and I don't need to adjust much beyond my multiplier. I'm running a 930 and a 920 as well- and I think both of them are at 1.35 qpi with 6400 QPI data rates.
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