Overclock

[Smooth*{MEOW}*]

I thought I'd share this.  Overclocked my CPU today, did the GPU last week.  Here are the results:

Stock

AMD 4000+ San Diego running at 200 FSB, 12x Multiplier, 2400Mhz
2GB(2x1) OCZ Platinum PC3200 DDR400
EVGA 7800GT N516 470/1100 (factory oc'ed from 400/1000 reference clocks)

After Overclocking

CPU running at 2640Mhz (220 FSB x 12 Multiplier), stock voltage, 10% overclock, 47C load temp (ambient 75F today)
RAM running at DDR440, stock voltage, 10% overclock
GPU running at 473/1190, 18.25% core overclock from reference, 19% memory overclock from reference


Anything above 220 on the FSB and the automatic memory divider would kick in taking my RAM below DDR400 speeds.  When I disabled it and tried to manually set the RAM speed I got nothing but BSOD's.  I have no doubt I can go higher and I'm running a solid oc board (A8N32). There are reports of people reaching 3Ghz on air cooling with this CPU, but until I get that divider figured out I'll stop at 2.64Ghz.  I ran Prime95 for half an hour between 10Mhz FSB intervals.  I also ran PCMark with everything at stock speeds and scored 3776.  After overclocking that increased to 4045.

[Smooth*{MEOW}*]

Got it up to 2817.5 Mhz (245 HT, 11.5x Multiplier, 1.47V Vcore, 4x HT Bus Multiplier, 980 Mhz HT Bus).  Had to dial down the previous memory overclock some from DDR440 to DDR433.4 with a divider.  The ram is really holding me back, but hey 2.82 Ghz from a 2.4 Ghz processor using stock voltages and memory timings, I can't complain.

PCMark05 scores:

Stock: 3776
10% OC: 4084
Current OC: 4270

[Smooth*{MEOW}*]

2852Mhz is about as high as I can get it without a sizeable voltage bump.  Running at 248x11.5=2852, memory at DDR438.8.

[Smooth*{MEOW}*]

I managed to get it stable at 2.88Ghz, a 19.8% gain in clock speed from the stock chip.  250 HT x 11.5 Multiplier = 2875 Mhz.  I bumped the Vcore from 1.47V to 1.49V to get the extra stability with relatively no increase in temps.  Memory is running on a divider at DDR442, a 10.5% gain at stock voltage.  PCMark05 score at these settings is 4336, a 560 point gain from stock.  I've also included a screenshot of the CPU benchmark from SiSoftware.  The stock AMD64 4000 was basically an FX-53 and had about the same performance level as that chip at stock speeds.  As seen in the picture, with the overclocking it's beating out an FX-55 and closing in on the FX-57.  I think 2.88Ghz will be the limit on this setup.  I can't break 2.9Ghz with it as the board doesn't seem to like running anything over 250 HT.  I'm pretty sure it's the chipset voltage holding it back.  In addition, the multiplier on Athlon64 chips is upward locked, meaning I can only reduce it from the stock value and not increase it above it.

[niftyzero]

have you run memtest86 yet? that will tell you just how stable you are.. let it run and generate some heat during some big block copying. 

i had an opteron 165 up to 3.4ghz on air last year with a  scythe ninja and 120m fan.  it idled at 32c and ran 43c on load.  i was lucky and got a low production number from newegg. 

i was getting ready to pull the chip out last year and pulled the heatsink off and the cpu came out too.  broke two pins off..  i may take it to a jeweler and have it fixed after all this time.

[Smooth*{MEOW}*]

I've been running Prime95 with the Large FFT's test.  I'm running a SI-120 + 120mm, about 38-40C idle, 48C load.  Ambient is pretty hot up here.

[niftyzero]

nice.  my ambient stays around 68 so my 6400 idles around 26c and loads at 38-40 with a scythe mini ninja and two 120m's running at extremely low rpm.