Athlon Test System
reasonable set up
Tower ATX Case w/ 300W PS, AMD Athlon 750 @ 750MHz.
and Overclocked (supplied by Outside
128MB of Corsair PC133 SDRAM , WD Expert AC418000 7200
RPM ATA66 Hard Drive, Elsa Erazor X2 AGP w/
NVidia 3.68 Drivers, Kenwood 72X
Win 98SE, DirectX
first attempt was to overclock the Athlon 750 just
using the abilities of the KA7. We were able to
crank the CPU up to a high of 878MHz. with an FSB
of 115MHz./PCI 35 and 2MHz. increment increase
over the FSB. This provided excellent
performance and stability with the SDRAM set to
"Host" for 117MHz. with a "Turbo"
(CAS 2) setting in the BIOS. We could not set
the memory clock to "Host+PCI" or the
machine would lock after a few minutes in Win98.
A "Host+PCI" setting would run your memory
at 152MHz. and the Corsair Module we used, just
couldn't handle it on the KA7. However, because
you can run the SDRAM clocks asynchronously to the FSB,
you can still overclock the CPU and run your memory
brings us to something we forgot to mention in the
setup section. You can also set DRAM CAS and
Access timings a number of different ways, which can
add to stability in extreme overclocking or bring you
extra memory bandwidth should you have good quality
PC133 memory. All told, we were very impressed
with the KA7's innate ability to overclock the Athlon
platform, an area that until now, has mostly been
avoided by most motherboards supporting AMD's flagship
then proceeded to augment the KA7's own overclocking
abilities with those of an Athlon Gold Finger
card. Remember the Outside
Loop Afterburner? It's baaack!
to our friends at Outside
Loop, we have the ability to actually change the
Athlon's Multiplier which take a entirely different
approach to overclocking the chip. Since
Athlon's typically don't take well to high front side
bus speeds, like a P3 Coppermine does, the Afterburner
can really open doors for you. Couple that with
the abilities of the KA7 dialing in FSB speed by 1MHz.
increments and you get some REALLY interesting
in the FSB speed on the KA7 to 111MHz. and the
Multiplier of the Athlon 750 that we were using, was
set to 8.5. We were able to boot Windows 98SE
and take these Sandra benchmarks for you.
CPU Benchmark @ 944
Memory Benchmark @ 944
"totally stoked" as the saying goes, when we
saw the system post and boot Window98 at 944MHz.
Also equally as impressive are the Sandra Scores
here. It makes you want to shell out the $1200
for a 1GHz. Athlon.... almost. :) Now,
back to reality here. As you may guess, with our
standard Global Win Dual Fan Heat Sink, this setup was
not stable for even one pass through of a Business or
Gaming Benchmark. Remember, we wanted to show
what is possible with a simple off the shelf cooling
solution. Add a Peltier to the mix here and
things could settle down nicely. Time to go find
a good Athlon designed Peltier but that is a story for
on the test track shall we?