ABIT AG8
Maximum Stable Overclock
237MHz (948MHz Bus) / 18.5% Delta
CPU Frequency
237×18 = 4266MHz
| Stock | Overclock | Delta | Delta % | |
| Sandra CPU Dhrystone ALU (MIPS) Sandra CPU Whetstone FPU (MFLOPS) Sandra CPU – ISSE2 |
10357 4322 7433 |
12283 5135 8922 |
1926 813 1489 |
18.60% 18.81% 20.03% |
| Sandra Memory Float (MB/s) Sandra Memory Int (MB/s) |
4571 4570 |
5333 5330 |
762 760 |
16.67% 16.63% |
| PCMark 04 | 5497 | 6279 | 782 | 14.23% |
| 3DMark 05 | 2623 | 2693 | 70 | 2.67% |
| Half-Life 2 – Avg FPS Half-Life 2 – Low FPS Half-Life 2 – High FPS |
59.59 29 193 |
61.23 31 224 |
1.64 2 31 |
2.75% 6.90% 16.06% |
Though the ABIT AG8 stopped overclocking at 237MHz, the results are very similar to the Asus P5GDC-V (comparisons of all results will be done at the end of this article). 3D performance has no real clear gain from system overclocking as seen by the minimal improvement in the average and lowest frame rate. However, by overclocking, CPU and memory performance increased by about 17.5% which would be useful for intensive desktop applications.
Environment:
| Stock | Overclocked | Delta | |
| CPU (Idle) | 9C 48F |
7C 45F |
-2C -3F |
| CPU (Load) | 23C 73F |
26C 79F |
3C 6F |
| System (Idle) | 2C 36F |
0C 32F |
-2C -4F |
| System (Load) | 0C 32F |
0C 32F |
0 |
Ambient Temperature = -11C / 12F
Notes:
Though the ABIT AG8 was the best performing overclocker at 14x multiplier, it falls short at the default 18x setting – it’s a bit unusual. Typically when overclocking you get a few settings beyond your optimal that are nearly stable, like how we saw 239-243MHz nearly stable on the Asus P5GDC-V. The ABIT exhibited no such behaviour. Once crossing the 237MHz mark, the computer would stop POSTing all together! I found it unusual that 237MHz works great, but anything above 237MHz is a blackhole.
What is a bit more odd is the fact 238MHz is not a selectable frequency! If you put 238MHz in the BIOS, upon rebooting the frequency will jump up to 239MHz and fail at POSTing.
There is something very unusual happening on the ABIT AG8 and updating the BIOS to v19 did not help.
