Heatsink Clearance, Overclocking and BIOS
Overall AOpen did a pretty good
job at clearing the socket area of obstructions. You may have problems fitting
the Thermalright SLK-900U because of the way the fins are oriented but the Alpha
PAL8045 should fit just fine. As you can see AOpen does include the four
necessary mounting holes so you can use those larger more hardcore
heatsink clearance measurements|
||9 mm |
|bottom (cam) clearance:
||8 mm |
|left side (arm) clearance:
||32 mm |
|right side clearance
||28 mm |
|socket mounting holes:
|max. heatsink base dimensions:
||~78x116 mm |
Note: Approx. measurements are made
from the edge of the socket (not the clips) to the closest obstacle
taller than the ZIF socket itself.
The socket is 51mm across, and
62mm from top to bottom.
AOpen AK79D-400 Max is using the new C1 revision of the
nForce2 chipset we had some pretty high hopes in terms of overclocking the motherboard.
Using an AthlonXP 3000+ processor, I first lowered the multiplier to 8x and
slowly began to raise the FSB...
We easily breezed by the 200 MHz mark, but the
excitement was cut short at 217 MHz where we ran into a few
However, raising the VDD voltage to 1.7V solved
those issues. We continued the overclocking journey and at 223 MHz FSB we
started to run into memory problems. Lowering the memory timings allowed us to
reach higher numbers, but performance was not as good.
With the memory at SPD we could hit a nice 234 MHz FSB
while maintaining 100% stability - however because of the lower timings
performance was about the same as 223MHz FSB with tighter timings.
Checking out the BIOS:
There are the usual memory tweaks we'd come to expect from a
mainstream/performance motherboard. Note there is a new option C1 Disconnect,
I'm not exactly sure what it does but with C1 based nForce2 Northbridges it's
recommended that you set that to enable. On earlier A1 and A2 nForce2
chipsets the correct setting is disable .
AOpen allows you to adjust the FSB from 100-255MHz in 1 MHz increments. Maximum CPU voltage
is 1.85V, DDR voltage 2.8V, AGP volt 1.8V and Chip (VDD) 1.7V.
Up next, the benchmarks you've been waiting for!