Before we got to
overclocking, the first thing we did was lower the CPU multiplier to 6x.
Lowering the multiplier makes sure that the Athlon64 4000+ processor is not the
overclocking bottleneck. This is only done during overclocking testing. When we
benchmark, we will raise the processor's clock speed to approximately the same
With the memory using Samsung K4H560838F-TCCD DRAM and starting at 200 MHz with 2-2-2-5
timings, we began to slowly raise the clock speed of the motherboard. The
GEMiNI PC3200 memory modules seemed up to the overclocking game but we started to see
weird errors at around 218 MHz. The memory would start to crash or reset the
system while running 3DMark05 or X2: The Threat. Increasing the memory voltage
to 2.8V solved these problems, so we continued to push the motherboard clock
The GEMiNi memory
seemed to like running with 2.8V and it easily passed the 240 MHz mark with
2-2-2-5 memory timings. Pretty impressive! To get past 242 MHz however, we had to
dramatically increase voltage to 3.4V!
Between 2.9-3.2V we got a big fat zero increase
in speed. Enthusiasts have long known that TCCD DRAM works well with low
as well as really high voltages. Anything in between 2.9-~3.2/3.3V doesn't seem
to help our cause though.
Boosting the memory voltage
to 3.4V allowed the Centon GEMiNi memory to hit higher speeds. In the end, the memory
topped out at a very respectable 246 MHz with 2-2-2-5 memory timings. It didn't
seem to like anything higher than 3.5V, as 3.8V actually lowered the maximum
speed we could run it at.
quite a few of you have asked
us how fast memory we've tested recently could go with looser timings, we also tested
the max speed the Centon GEMiNi PC3200 memory would hit with 3-3-3-9 memory
timings. Keeping 3.4V and starting at 246 MHz we pushed the memory up fairly quickly.
The GEMiNI PC3200 memory hit a top speed of 302 MHz while keeping 3-3-3-9 timings.
|pcstats test system
amd athlon64 4000+
12 x 200 mhz = 2.4 ghz
10 x 246 mhz = 2.46 ghz
dfi lanparty nf4 sli-dr (nf4-sli)
2x 512mb corsair twinx3200xl pro
2x 512mb centon
||74gb western digital raptor |
||gigabyte go-w0808a dvd burner|
||seasonic supertornado 400w|
windowsxp build 2600
nf4 standalone 6.53
business winstone 2004