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Windows 7: 1055T Overclocking

12 Jun 2010   #1

Win 7 pro x64
1055T Overclocking

So, I was having a couple of problems with my E6600, which I'd managed to get stable at 3.4Ghz, and decided I'd had it for long enough to justify something completely new, especially as it was struggling on the truely huge SupCom maps. So, I grabbed a 1055T, Gigabyte GA-890GPA-UD3H mobo and 2x2Gb of Corsair DDR3 ram.

Anyhow, I started off with this:

A cpu that sits around 41C on 1.33V basic. I went into the bios, disabled C1E support, K8 Cool&Quiet control and Core Performance Boost (TurboCore?)

Got as far as the login screen, entered my password and my PC reset. Which is odd, since everything should be at default settings apart from those things, which are all power management and shouldn't affect it anyway. Pics of the bios below, the second one shows the voltages, though I have them at auto for now as I have no idea on what to set any of them at, and not sure when I would go about changing any of them.

Imageshack - bios1.jpg
Imageshack - bios2.jpg
Imageshack - bios3.jpg

Still, I did notice that it seems to think the CPU clock ratio gives me a speed of 3300Mhz, which is what I would get if I had a 16.5 multiplier. But my chip's locked to a 14x multiplier, so I've lowered it manually to 14. Also, the ram seems to be underclocked, as it is supposedly 1600Mhz, but ram speed isn't important as processor speed and stability right now so I left it as it was.

So, I was planning on keeping things like that, slowly nudging the speed up 5Mhz at a time, while lowering multipliers as needed for the northbridge and HTlink to keep them below 2Ghz.

Also, with the normal clocks, AMD Overdrive and coretemp are correctly reporting the 14x multiplier at stock speeds, but CPUz seems to jump between the 14x and 4x multipliers, which is a little weird.

But just as I was about to start overclocking, my PC reset, still on the stock clocks >_> Ran 15 mins of prime 95 completely stable, TMPIN1&2 hitting 44C. So its obviously not a temperature thing causing it, VID is 1.325 according to AMD Overdrive. But then I decided to run a blend test, since the previous run had putely been CPU based. Started the blent test, instant freeze.

I've now been running memtest, 20 mins in and 35% of the way through a pass. Its being reported as:

Ram: 533Mhz (DDR1067) CAS: 7-7-7-20 / DDR3

Corsair XMS3 DHX 4GB (2x2GB) DDR3 1600C9DHX Twin3X (TW3X4G1600C9DHX) [TW3X4G1600C9DHX] Memory DDR3 Dual-Channel - PC3-12800

That stuff. Rated for 1600Mhz at 9-9-9-24

I know since its running underclocked, it tightens the timings, but could that have caused the instability? I'm at a bit of a loss why my system isn't even stable at stock speeds, let alone overclocked.

Edit: I'm also running on the origina board's bios, there's been two updates to it recently, I'm considering flashing up to the latest version, seeing if that helps.

Got impatient (oh dear), and set the timing as such in the bios:

Booted up into windows, logged in, and it froze while loading all the startup programs. Argh!

Edit2: One thing I just thought of. When first installed, I couldn't install the latest (10.5) Catalyst drivers, just got the error: Driver Install: the installation failed. The 10.4s installed fine, though. And on loading a youtube page, there is a very brief moment where it looks like the screen tears, but apart from that its fine. Still, I doubt this is a graphics card issue, is it?

Final edit: And... problem all solved. My mobo didn't seem to do a very good job of powering the ram. Manually set it to 1.65V and its running like a charm. Testing stability at 240Mhz core speed, 3.5Ghz total, things are looking smooth.

My System SpecsSystem Spec


 1055T Overclocking

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