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GeForce 8600 GT 1GB GDDR3 vs Radeon HD 6850

Intro

The GeForce 8600 GT 1GB GDDR3 comes with a GPU core clock speed of 540 MHz, and the 1024 MB of GDDR3 RAM runs at 700 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare that to the Radeon HD 6850, which comes with a clock frequency of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It features 960 SPUs, 48 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3 47 Watts
Radeon HD 6850 127 Watts
Difference: 80 Watts (170%)

Memory Bandwidth

In theory, the Radeon HD 6850 should be quite a bit faster than the GeForce 8600 GT 1GB GDDR3 overall. (explain)

Radeon HD 6850 128000 MB/sec
GeForce 8600 GT 1GB GDDR3 22400 MB/sec
Difference: 105600 (471%)

Texel Rate

The Radeon HD 6850 should be much (more or less 331%) more effective at anisotropic filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

Radeon HD 6850 37200 Mtexels/sec
GeForce 8600 GT 1GB GDDR3 8640 Mtexels/sec
Difference: 28560 (331%)

Pixel Rate

The Radeon HD 6850 will be quite a bit (about 474%) faster with regards to full screen anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6850 24800 Mpixels/sec
GeForce 8600 GT 1GB GDDR3 4320 Mpixels/sec
Difference: 20480 (474%)

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 1GB GDDR3

Amazon.com

Check prices at:

Radeon HD 6850

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 1GB GDDR3 Radeon HD 6850
Manufacturer nVidia AMD
Year April 2007 October 2010
Code Name G84 Barts Pro
Memory 1024 MB 1024 MB
Core Speed 540 MHz 775 MHz
Memory Speed 1400 MHz 4000 MHz
Power (Max TDP) 47 watts 127 watts
Bandwidth 22400 MB/sec 128000 MB/sec
Texel Rate 8640 Mtexels/sec 37200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 24800 Mpixels/sec
Unified Shaders 32 960
Texture Mapping Units 16 48
Render Output Units 8 32
Bus Type GDDR3 GDDR5
Bus Width 128-bit 256-bit
Fab Process 80 nm 40 nm
Transistors 289 million 1700 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 1GB GDDR3

Amazon.com

Check prices at:

Radeon HD 6850

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 GT 1GB GDDR3 vs Radeon HD 6850”
Geoforce 8600gt | Tribalgamingin says:

[...] GeForce 8600 GT 1GB GDDR3 vs Radeon HD 6850 – Performance …GeForce 8600 GT 1GB GDDR3 vs Radeon HD 6850. Intro. The GeForce 8600 GT 1GB GDDR3 has a GPU core speed of 540 MHz, and the 1024 MB of GDDR3 … [...]

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