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 07 February 2005
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 Dr. Adrian Wong
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Maxxing The Mobility Radeon 9700 Guide
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ATI Mobility Radeon 9700

Recently, we posted a review of the ATI Mobility Radeon 9700 GPU. The Mobility Radeon 9700 proved to be a very powerful mobile GPU in our tests, topping other comparable mobile GPUs.

Today, we are going to see if we can further extend that lead. But first, let's refresh our memory of the some of the top GPUs in the ATI Mobility family.

Mobility 9600
Mobility 9700
Mobility 9800
Mobility X300
Mobility X800
Core
M10
M11
M18
M22
M28
Pixel Pipelines
4
4
8
4
12
Vertex Pipelines
2
2
4
2
6
Core Clock
350 MHz
450 MHz
350 MHz
350 MHz
400 MHz
Fill Rate
1200 MTexels/s
1800 MTexels/s
2800 MTexels/s
1400 MTexels/s
4800 MTexels/s
Memory Clock
200 MHz
260 MHz
300 MHz
300 MHz
400 MHz
Memory Bandwidth
6.4 GB/s
8.32 GB/s
19.2 GB/s
9.6 GB/s
25.6 GB/s
AGP / PCIe
AGP 8X
AGP 8X
AGP 8X
PCIe x16
PCIe x16

As you can see, the ATI Mobility Radeon 9700 officially runs at 450MHz core and 260MHz memory. Of course, in reality, the actual clock speeds are determined by the notebook manufacturers.

 

Our Testbed

Our testbed is the recently reviewed BenQ Joybook 7000 notebook which is powered by an Intel Pentium M 725 (1.6GHz) processor and of course, the Mobility Radeon 9700. Let's compare the specifications of the BenQ Joybook 7000's Mobility Radeon 9700 GPU with the official ATI specifications.

Rated Specs
Actual Specs
Core Clock
450 MHz
445.5 MHz
Fill Rate
1800 MTexels/s
1782 MTexels/s
Memory Clock
260 MHz
216 MHz
Memory Bandwidth
8.32 GB/s
6.91 GB/s
AGP Support
8X
4X
AGP Sidebanding
Supported
Enabled
AGP FastWrites
Supported
Enabled

While the core clock speed was close to the maximum rated clock speed, the memory clock was really low at only 216MHz. Naturally, that reduced its performance by limiting the amount of memory bandwidth available to the GPU. The Mobility Radeon 9700 was basically memory-limited in the BenQ Joybook 7000.

It comes with 64MB of DDR SDRAM, which is pretty much standard fare these days. This allows for a moderate amount of texture storage although AGP texturing will definitely be needed with texture-intensive games. In addition, the Joybook 7000's motherboard only supported AGP4X transfers.

Therefore, I thought it would be interesting to see how far I can push the Mobility Radeon 9700. You never know, some overclocking may actually turn this fast mobile GPU into a real beast! Although nothing can be done about the AGP protocol support or the size of its memory buffer, the boost in clock speeds should speed things up quite a bit. Let's see how I fared!

 



 
   
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