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GeForce 9600 GT 1GB vs Radeon HD 6950

Intro

The GeForce 9600 GT 1GB has a clock frequency of 650 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 256-bit bus, and uses a 65/55 nm design. It features 64 SPUs, 32 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 6950, which comes with clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 1408 SPUs along with 88 TAUs and 32 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9600 GT 1GB 95 Watts
Radeon HD 6950 200 Watts
Difference: 105 Watts (111%)

Memory Bandwidth

The Radeon HD 6950 should in theory perform quite a bit faster than the GeForce 9600 GT 1GB in general. (explain)

Radeon HD 6950 160000 MB/sec
GeForce 9600 GT 1GB 57600 MB/sec
Difference: 102400 (178%)

Texel Rate

The Radeon HD 6950 is much (approximately 238%) more effective at anisotropic filtering than the GeForce 9600 GT 1GB. (explain)

Radeon HD 6950 70400 Mtexels/sec
GeForce 9600 GT 1GB 20800 Mtexels/sec
Difference: 49600 (238%)

Pixel Rate

The Radeon HD 6950 should be quite a bit (about 146%) more effective at full screen anti-aliasing than the GeForce 9600 GT 1GB, and able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 6950 25600 Mpixels/sec
GeForce 9600 GT 1GB 10400 Mpixels/sec
Difference: 15200 (146%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce 9600 GT 1GB

Amazon.com

Radeon HD 6950

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model GeForce 9600 GT 1GB Radeon HD 6950
Manufacturer nVidia AMD
Year Feb 2008 December 2010
Code Name G94a/b Cayman Pro
Fab Process 65/55 nm 40 nm
Bus PCIe x16 2.0 PCIe x16
Memory 1024 MB 1024 MB
Core Speed 650 MHz 800 MHz
Shader Speed 1625 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 64 1408
Texture Mapping Units 32 88
Render Output Units 16 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1
Power (Max TDP) 95 watts 200 watts
Shader Model 4.0 5.0
Bandwidth 57600 MB/sec 160000 MB/sec
Texel Rate 20800 Mtexels/sec 70400 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 25600 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

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