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GeForce 8600 GT 256MB GDDR3 vs Radeon HD 6670 (OEM) 1GB

Intro

The GeForce 8600 GT 256MB GDDR3 comes with a clock frequency of 540 MHz and a GDDR3 memory frequency of 700 MHz. It also features a 128-bit memory bus, and uses a 80 nm design. It is comprised of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare those specs to the Radeon HD 6670 (OEM) 1GB, which comes with clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB GDDR3 47 Watts
Radeon HD 6670 (OEM) 1GB 63 Watts
Difference: 16 Watts (34%)

Memory Bandwidth

In theory, the Radeon HD 6670 (OEM) 1GB is 186% faster than the GeForce 8600 GT 256MB GDDR3 in general, due to its greater data rate. (explain)

Radeon HD 6670 (OEM) 1GB 64000 MB/sec
GeForce 8600 GT 256MB GDDR3 22400 MB/sec
Difference: 41600 (186%)

Texel Rate

The Radeon HD 6670 (OEM) 1GB will be much (more or less 122%) better at texture filtering than the GeForce 8600 GT 256MB GDDR3. (explain)

Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
GeForce 8600 GT 256MB GDDR3 8640 Mtexels/sec
Difference: 10560 (122%)

Pixel Rate

The Radeon HD 6670 (OEM) 1GB will be a lot (about 48%) more effective at anti-aliasing than the GeForce 8600 GT 256MB GDDR3, and will be capable of handling higher resolutions better. (explain)

Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
GeForce 8600 GT 256MB GDDR3 4320 Mpixels/sec
Difference: 2080 (48%)

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 GT 256MB GDDR3

Amazon.com

Check prices at:

Radeon HD 6670 (OEM) 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 GT 256MB GDDR3 Radeon HD 6670 (OEM) 1GB
Manufacturer nVidia AMD
Year April 2007 February 2011
Code Name G84 Turks
Memory 256 MB 1024 MB
Core Speed 540 MHz 800 MHz
Memory Speed 1400 MHz 4000 MHz
Power (Max TDP) 47 watts 63 watts
Bandwidth 22400 MB/sec 64000 MB/sec
Texel Rate 8640 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 32 480
Texture Mapping Units 16 24
Render Output Units 8 8
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 289 million 715 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video 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 maximum amount of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 256MB GDDR3

Amazon.com

Check prices at:

Radeon HD 6670 (OEM) 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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