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It seems that most of the really high OCs are on Z68 boards. I wonder if something is off with the Z77 chipset, or if it's a matter of a new platform that could use more BIOS optimization? Could just be coincidence too.
I'm curious how my 7950 would compare with my 1250 clock. I think I really hit the silicon with this card...
Good on you for letting AMD have it again over drivers. I may want to go dual card some day.
The way the the thermal interface is applied is honestly more important that what it is, but I'd tend to opt for the metal. I used the TIM that came with my XSPC block (it was something metal based), and I have no issues with temps.
The TIM issue definitely affects me on water. It clearly cannot get heat off of the core as fast as my waterblock can wick it away.
Then again, the 24/7 clock I'm using is pretty low voltage anyways, and I'd rather keep it that way.
Nice clocks! What mobo are you running? Did you tweak anything other than core voltage?
You should give IBT a whirl too. It stresses the CPU more than Prime 95. Definitely good clocks for that voltage!
The 3770k by a long shot unless you need X79 specific features for some reason. Better IPC, lower power consumption, higher clock speed = clear win for the 3770k in that comparison.
Have you tried moving PLL voltage down a little bit? I've found the chip to be more stable at relatively high overclocks with PLL in the 1.46-1.6ish range. Personally, 1.475 seems to be the sweet spot for my 4400 OC.
I think some people just got lucky with memory binning. I obviously got lucky with the GPU, it can keep stable at clocks higher than most of the 7970s that [H] tested.
It seems that at 1700mv the best I can keep stable in kombustor is 1500. A small improvement. I'll try it out in a game to see if it's actually stable, but I have a feeling that I might just have bum memory on the card. It just seems odd that the GPU would be binned so high (better than pretty...
I've managed core clocks of 1250 and 1.26v with complete stability, but I can only get the memory up to 1450 before I start to have stability issues. Oddly enough, I see significant increase in performance all the way up to 1450. I was under the impression that memory usually ran into a "soft...
I think I definitely got kinda crappy memory. 1450 mhz isn't bad, but it seems like most people are getting much higher than that. 1450 is still faster than a reference 7970, and a touch above the Sapphire OC 7970, but I'd love a bit more. Anything above 1550 and the card crashes almost...
GPU-Z won't run on my machine, so I can't tell you (no idea why, windows popped up with "has stopped working" as soon as I open it). My 7950 manages 1250 core, but only 1450. The core is obviously pretty good, but the memory not as much.
Either a 670 or 7950, IMHO. I'm pretty sure my 7950 as it's currently clocked (1250 core 1450 memory) would outperform your average max-OCed 670 by a fair margin, but you can never count on a piece of hardware OCing well. I'd definitely opt for the 670 over the 78xx line of cards.
I have the Sapphire OC edition. I've seen people do significantly better memory clocks than mine will do, I may try tweaking the memory voltage a bit, but it runs everything great as is.
Core voltage is 1.26v. The keep it stable, and maintains temps under 60C even at 100% load.
It's quiet to...
A 7950 OCed to the max isn't that far behind a 7970 OCed to the max, depending on how well you fare in the silicon lottery. I haven't even spent very much time tweaking mine, and it will run at 1250/1450. My core is a bit better than average, by my memory a bit worse than average, most people...