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Untitled Document
Overclocking Opportunities
Only the K8T800 Pro and nForce 250 chipsets can lock the AGP and PCI Buses
and not all boards support the function. Lack of these features may not limit
your tweaking possibilities, since most Athlon 64 CPUs won't manage much more
than a 10% overclock anyway. With the introduction of low end Semprons, we hope
this will change.
Socket 754 Sempron Performance
Whilst we do not have any samples of the Sempron CPUs, we can get an idea of
their performance by reducing the multiplier on the test 3200+. The test CPU
has more cache than the Semprons will have, so these figures will be a little
on the optimistic side.
UT2004
|
CPU
Speed |
1024
x 768
|
1280
x 1024
|
1600 x 1200
|
Difference |
|
2000
MHz |
24.81 |
|
13.42 |
0.0% (Base) |
|
1800
MHz |
22.88 |
16.34 |
12.28 |
-8.3% |
|
1600
MHz |
20.60 |
14.69 |
11.07 |
-17.4% |
|
1400
MHz |
18.24 |
13.05 |
9.78 |
-26.8% |
|
1200
MHz |
15.86 |
11.30 |
8.50 |
-36.5% |
Aquamark
| CPU Speed |
Aquamark 3 |
Difference |
| 2000 MHz |
46 536 |
0.0% (Base) |
| 1800 MHz |
45 407 |
-2.4% |
| 1600 MHz |
43 923 |
-5.6% |
| 1400 MHz |
42 034 |
-9.7% |
| 1200 MHz |
39 376 |
-15.4% |
As expected, the scores steadily decline with the clock speed
at around 8-9% performance drop in UT2004 for every 200MHz which equates to
a 4-5% drop in Aquamark. The Athlon 64 platform can use multipliers in increments
of 0.5 X, so there could be 100MHz speed increments between models. At the
end of the year, AMD are planning to reduce the process size of the Semprons,
which will bring us chips with even more overclocking potential.
If you look at the Aquamark scores, which are a good estimation of overall
gaming performance, you will see only about a 15% difference between a 2GHz
clock speed and 1.2GHz. This shows just how much load is put on the GPU nowadays
and also suggests that the Semprons will be excellent value for money, especially
those clocked at 1.6GHz and above.
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