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BLEH!
I've had similar issues. Reset EVERYTHING to stock, do a full CMOS clear. You shouldn't need to up FSB beyond 143 if you want 2 GHz RAM due having an unlocked chip. Start by seeing if you can get the CPU cores stable at where they were simply by upping the max turbo multiplier. Set your Vcore and CPUPLL to 1.35 and 1.9 V ish and up the multi a bit at a time, stressing at each point. When you can get that stable, worry about the other stuff.
Area 51
Man
Reset optimized defaults in the BIOS:infinity:
Rosche22
I have reset to defaults and cleared the CMOS many times along the way. Maybe I'll try seeing if it passes on stock then work the multiplier. It just makes no sense that it was working before
BLEH!
There is a chance you might've damaged something on the board/chip. A VRM phase maybe? Iunno
Rosche22
I started from scratch again and finally got it stable at 4.0 ghz with 155 bclk and 26 multi. It seems to need way more vcore to get there than I remember to be prime95 stable for 24 hrs. Especially since my old overclock was 4.3. Vcore is set at 4.250v in the bios but reads 4.5 in eleet. I set cpu vtt to +150 in bios and reads 1.42 in eleet. Ram is at 1860mhz. Ioh vcore at 1.3 and ram at 1.65v with stock timings. Everything else is auto. I am gonna try to up to 4.3 now by increasing multi. It's just weird so much voltage is required compared to what others report. Any advice is welcome
Veteran
What is the batch number for the 980x? This can be found on the cpu itself and on the box?
Rosche22
Batch number: 3013a525
Veteran
A good watercooling setup and you should be able to achieve 4.4- 4.5 Ht-on with ease.
http://img.photobucket.com/albums/v64/hmj2k3/4515.jpg
This was done on a custom water setup with an EVGA Classified E760 motherboard. Not a bad chip, the best 980x chips are the 3003 batch, i almost bought one myself the other week. The 3003 batch can hit 4.7 Ht-on which is awesome for a cpu that was released around 4-5 years ago.
DO NOT try to achieve 4.5 with the cooling that you have as you will probably kill the chip.:)
dune2
I've seen this a lot. CPUs manage great OCs at the beginning and after a while they "degrade". Not sure this is the right word for what really happens, but the effect is that previously rock-stable settings just don't hold up over long periods of time.
I am pretty sure that most of the 24h prime stable systems around would tank in the first half hour if tested again after a year or two.
Veteran
Mine is still rock solid even when running tests again. I reckon i could get 4.5 out of it if i upgraded my ram with my current cooling especially if i turn HT-off. The ram wont budge anymore though. I do have the very best that a custom watercooling setup could buy at the time when i bought my water setup and i did alot of research. Something people fail to do nowadays.
