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Abit Game Accelerator - Introduction & Synthetic benchmarks
Last week we had a look at one of the most intriguing 865PE based motherboards on the market, Abit's IS7-G. What makes it really intriguing is not the vile shade of orange that it's PCB is coloured, but what Abit term 'Game Accelerator' technology. This is the second part of our IS7-G motherboard review, where we concentrate on Game Accelerator technology. The first part can be found here.

The prospect of getting extra performance for nothing is something very few people will turn down and here find out what performance gains result after enabling this technology. Now we could write paragraphs describing what this technology does, but in essence it tweaks memory timings (similar to Performance Acceleration Technology found in the 875P chipset). For it to work the memory timings have to be controlled by SPD. With that aside, let the benchmarks do the talking.

Game Accelerator has three modes : Turbo, Street Racer and F1, with Turbo being the "lowest" and F1 being the "highest" performance mode.

Pentium 4 test machine
Intel Pentium 4 'C' 3.2GHz (800MHz FSB)
2x Corsair 256Mb PC3200 XMS Low Latency Platinium DDR SDRAM
ATI Radeon 9800 PRO 128MB
Western Digital WD400JB (8Mb cache) 40Gb hard disk drive
Mitsumi 42x ATAPI CDROM
Coolermaster ATC 200 case
Intel standard design cooler
Microsoft Windows XP Professional with Service Pack 1 installed
Microsoft DirectX 9.0a
IS7-G BIOS version : 14

Catalyst 3.5 drivers were used on the Radeon 9800 PRO.

First we'll start off with memory subsystem benchmarks. We expect to see gains in memory bandwidth due to the tweaking done by Abit's Game Accelerator.

In both integer and floating point we see an extra 600MB/sec which equates to 15%. The interesting thing here is that most of that gain is seen in the first "step" up from standard running mode, the 'Turbo' mode. Later on we see much smaller gains.
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