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GeForce 8600 GTS vs Radeon HD 4670 512MB

Intro

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

Compare those specs to the Radeon HD 4670 512MB, which uses a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR4/GDDR3/DDR3/DDR2 RAM is set to run at a frequency of 1000 MHz on this specific card. It features 320(64x5) SPUs as well as 32 Texture Address Units and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB 70 Watts
GeForce 8600 GTS 75 Watts
Difference: 5 Watts (7%)

Memory Bandwidth

Both cards have the exact same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The Radeon HD 4670 512MB should be a lot (about 122%) more effective at anisotropic filtering than the GeForce 8600 GTS. (explain)

Radeon HD 4670 512MB 24000 Mtexels/sec
GeForce 8600 GTS 10800 Mtexels/sec
Difference: 13200 (122%)

Pixel Rate

The Radeon HD 4670 512MB will be a little bit (more or less 11%) faster with regards to AA than the GeForce 8600 GTS, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 4670 512MB 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

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Radeon HD 4670 512MB

Amazon.com

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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 512MB
Manufacturer nVidia AMD
Year April 2007 Sep 10, 2008
Code Name G84 RV730 XT
Memory 512 MB 512 MB
Core Speed 675 MHz 750 MHz
Memory Speed 2000 MHz 2000 MHz
Power (Max TDP) 75 watts 70 watts
Bandwidth 32000 MB/sec 32000 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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8600 GTS

Amazon.com

Check prices at:

Radeon HD 4670 512MB

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.

Comments

One Response to “GeForce 8600 GTS vs Radeon HD 4670 512MB”
GF 8600 GTS (256) Vs ATI 4650 (1 gig) - Overclock.net - Overclocking.net says:

[...] the 8600 can get 2k? haha mmmm http://www.hwcompare.com/3069/geforc...hd-4670-512mb/ 4670 v 8600 GTS 512. __________________ CM Elite Series ClubAUSSIE OCN CLUB L : O : S : I : A [...]

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