When it comes to overclocking, Intel is on the ball. Its
P35 Express is the best overclocking chipset available and its upcoming X38
Express is slated to be even better. Even Intel's mainstream and entry level
chipsets are kicking a lot of butt, so we have some high hopes for
the Shuttle XPC SG33G50 and its G33 Express chipset.
small form factor system will be equipped with an Intel
Core 2 Duo E6750 processor and 2GB of Corsair's Twin2X2048-6400C4 memory.
The memory was first set to run at DDR2-667 MHz mode, but the CPU clock multiplier
was left at 8x because there are no CPU clock multiplier options in the BIOS. Starting at 333 MHz FSB, the Shuttle XPC SG33G50 motherboard clock speed was overclocked in 5 MHz increments. The computer easily passed the 400 MHz mark without breaking a sweat, all current generation Intel motherboards hit that level easily.
MHz FSB the Shuttle XPC SG33G50 system started to show some signs of instability, so the Northbridge voltage was increased to 1.3V and CPU to 0.25V above stock. That solved our issues and we continued to push the PC further. The Shuttle XPC SG33G50 hit a maximum speed of 440 MHz FSB, and that was that.
Oh well. In any case, an overclock of 440 MHz still isn't too bad speed considering the Shuttle XPC SG33G50 is a SFF PC first and overclocking platform second.
Inside the Shuttle XPC BIOS:
The Shuttle XPC SG33G50 has the usual memory timing options we've
become accustomed to; memory operating frequency, CAS Latency, RAS to CAS Delay,
RAS Precharge, etc. It also allows you to adjust your onboard frame buffer - the
larger you make that though the more memory the system memory it takes over.
The Shuttle XPC SG33G50 motherboard frequency
can be increased to 600 MHz FSB. The maximum CPU voltage is 0.5V above stock, while
DDR2 memory goes as high as 2.575V, FSB voltage to 1.35V, Northbridge to 1.4V and the Southbridge
Set voltage to 1.65V and 1.2V respectively. The Shuttle XPC SG33G50 lacks CPU
clock multiplier adjustments. Without those, you will not be able to overclock as
high as with a full sized motherboard, but then again that is not be
a big selling feature for this type of computer.
Benchmarks are up right after the next click...