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GeForce 8600 GTS vs Radeon HD 4670 1GB

Intro

The GeForce 8600 GTS has a GPU core clock speed of 675 MHz, and the 512 MB of GDDR3 RAM runs at 1000 MHz through a 128-bit bus. It also is comprised of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 4670 1GB, which features a core clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1100 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB 70 Watts
GeForce 8600 GTS 75 Watts
Difference: 5 Watts (7%)

Memory Bandwidth

Performance-wise, the Radeon HD 4670 1GB should in theory be just a bit better than the GeForce 8600 GTS overall. (explain)

Radeon HD 4670 1GB 35200 MB/sec
GeForce 8600 GTS 32000 MB/sec
Difference: 3200 (10%)

Texel Rate

The Radeon HD 4670 1GB will be quite a bit (more or less 122%) faster with regards to AF than the GeForce 8600 GTS. (explain)

Radeon HD 4670 1GB 24000 Mtexels/sec
GeForce 8600 GTS 10800 Mtexels/sec
Difference: 13200 (122%)

Pixel Rate

The Radeon HD 4670 1GB will be a little bit (approximately 11%) faster with regards to FSAA than the GeForce 8600 GTS, and also should be capable of handling higher resolutions better. (explain)

Radeon HD 4670 1GB 6000 Mpixels/sec
GeForce 8600 GTS 5400 Mpixels/sec
Difference: 600 (11%)

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

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GeForce 8600 GTS

Amazon.com

Check prices at:

Radeon HD 4670 1GB

Amazon.com

Check prices at:

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

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Model GeForce 8600 GTS Radeon HD 4670 1GB
Manufacturer nVidia AMD
Year April 2007 Sep 10, 2008
Code Name G84 RV730 XT
Memory 512 MB 1024 MB
Core Speed 675 MHz 750 MHz
Memory Speed 2000 MHz 2200 MHz
Power (Max TDP) 75 watts 70 watts
Bandwidth 32000 MB/sec 35200 MB/sec
Texel Rate 10800 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 5400 Mpixels/sec 6000 Mpixels/sec
Unified Shaders 32 320(64x5)
Texture Mapping Units 16 32
Render Output Units 8 8
Bus Type GDDR3 GDDR4/GDDR3/DDR3/DDR2
Bus Width 128-bit 128-bit
Fab Process 80 nm 55 nm
Transistors 289 million 514 million
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GTS

Amazon.com

Check prices at:

Radeon HD 4670 1GB

Amazon.com

Check prices at:

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.

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