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

Intro

The GeForce 8600 GT 256MB GDDR3 features a core clock frequency of 540 MHz and a GDDR3 memory speed of 700 MHz. It also makes use of a 128-bit bus, and uses a 80 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon HD 6670 (OEM) 1GB, which has a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 480 Stream Processors, 24 TAUs, and 8 Raster Operation Units.

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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

As far as performance goes, the Radeon HD 6670 (OEM) 1GB should in theory be much superior to the GeForce 8600 GT 256MB GDDR3 overall. (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 is much (approximately 122%) better at AF 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

If using a high screen resolution is important to you, then the Radeon HD 6670 (OEM) 1GB is superior to the GeForce 8600 GT 256MB GDDR3, by a large margin. (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: Bandwidth is the max amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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