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GeForce 8600 GT 1GB GDDR3 vs Radeon RX 7900 XT

Intro

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

Compare those specs to the Radeon RX 7900 XT, which features clock speeds of 1500 MHz on the GPU, and 2500 MHz on the 20480 MB of GDDR6 memory. It features 5376 SPUs as well as 336 Texture Address Units and 192 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3 47 Watts
Radeon RX 7900 XT 300 Watts
Difference: 253 Watts (538%)

Memory Bandwidth

Performance-wise, the Radeon RX 7900 XT should in theory be much better than the GeForce 8600 GT 1GB GDDR3 in general. (explain)

Radeon RX 7900 XT 819200 MB/sec
GeForce 8600 GT 1GB GDDR3 22400 MB/sec
Difference: 796800 (3557%)

Texel Rate

The Radeon RX 7900 XT will be much (about 5733%) faster with regards to AF than the GeForce 8600 GT 1GB GDDR3. (explain)

Radeon RX 7900 XT 504000 Mtexels/sec
GeForce 8600 GT 1GB GDDR3 8640 Mtexels/sec
Difference: 495360 (5733%)

Pixel Rate

The Radeon RX 7900 XT is quite a bit (about 6567%) better at full screen anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and also should be capable of handling higher screen resolutions better. (explain)

Radeon RX 7900 XT 288000 Mpixels/sec
GeForce 8600 GT 1GB GDDR3 4320 Mpixels/sec
Difference: 283680 (6567%)

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 RX 7900 XT

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 RX 7900 XT
Manufacturer nVidia AMD
Year April 2007 December 2022
Code Name G84 Navi 31 XT
Memory 1024 MB 20480 MB
Core Speed 540 MHz 1500 MHz
Memory Speed 1400 MHz 5000 GB/s
Power (Max TDP) 47 watts 300 watts
Bandwidth 22400 MB/sec 819200 MB/sec
Texel Rate 8640 Mtexels/sec 504000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 288000 Mpixels/sec
Unified Shaders 32 5376
Texture Mapping Units 16 336
Render Output Units 8 192
Bus Type GDDR3 GDDR6
Bus Width 128-bit 320-bit
Fab Process 80 nm 5 nm
Transistors 289 million 57700 million
Bus PCIe x16 PCIe 4.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 1GB GDDR3

Amazon.com

Check prices at:

Radeon RX 7900 XT

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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