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GeForce 8600 GT 1GB GDDR3 vs Radeon R9 295X2

Intro

The GeForce 8600 GT 1GB GDDR3 features a core clock speed of 540 MHz and a GDDR3 memory frequency of 700 MHz. It also features a 128-bit memory bus, and makes use of a 80 nm design. It is made up of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the Radeon R9 295X2, which features a core clock frequency of 1018 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 512-bit bus, and uses a 28 nm design. It is made up of 2816 SPUs, 176 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3 47 Watts
Radeon R9 295X2 500 Watts
Difference: 453 Watts (964%)

Memory Bandwidth

Theoretically, the Radeon R9 295X2 should perform quite a bit faster than the GeForce 8600 GT 1GB GDDR3 in general. (explain)

Radeon R9 295X2 640000 MB/sec
GeForce 8600 GT 1GB GDDR3 22400 MB/sec
Difference: 617600 (2757%)

Texel Rate

The Radeon R9 295X2 is much (approximately 4047%) faster with regards to texture filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

Radeon R9 295X2 358336 Mtexels/sec
GeForce 8600 GT 1GB GDDR3 8640 Mtexels/sec
Difference: 349696 (4047%)

Pixel Rate

The Radeon R9 295X2 will be much (approximately 2916%) more effective at FSAA than the GeForce 8600 GT 1GB GDDR3, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 295X2 130304 Mpixels/sec
GeForce 8600 GT 1GB GDDR3 4320 Mpixels/sec
Difference: 125984 (2916%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 8600 GT 1GB GDDR3

Amazon.com

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Radeon R9 295X2

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 R9 295X2
Manufacturer nVidia AMD
Year April 2007 April 2014
Code Name G84 Vesuvius
Memory 1024 MB 4096 MB (x2)
Core Speed 540 MHz 1018 MHz (x2)
Memory Speed 1400 MHz 5000 MHz (x2)
Power (Max TDP) 47 watts 500 watts
Bandwidth 22400 MB/sec 640000 MB/sec
Texel Rate 8640 Mtexels/sec 358336 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 130304 Mpixels/sec
Unified Shaders 32 2816 (x2)
Texture Mapping Units 16 176 (x2)
Render Output Units 8 64 (x2)
Bus Type GDDR3 GDDR5
Bus Width 128-bit 512-bit (x2)
Fab Process 80 nm 28 nm
Transistors 289 million 6200 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be applied per second. This number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8600 GT 1GB GDDR3

Amazon.com

Check prices at:

Radeon R9 295X2

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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