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GeForce 8600 GT 1GB GDDR3 vs Radeon RX 7900 XT

Intro

The GeForce 8600 GT 1GB GDDR3 makes use of a 80 nm design. nVidia has set the core speed at 540 MHz. The GDDR3 RAM works at a speed of 700 MHz on this particular card. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare all of that to the Radeon RX 7900 XT, which features a clock speed of 1500 MHz and a GDDR6 memory frequency of 2500 MHz. It also makes use of a 320-bit memory bus, and uses a 5 nm design. It is made up of 5376 SPUs, 336 Texture Address Units, and 192 Raster Operation Units.

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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

As far as performance goes, the Radeon RX 7900 XT should in theory be much better than the GeForce 8600 GT 1GB GDDR3 overall. (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 is much (approximately 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

If using high levels of AA is important to you, then the Radeon RX 7900 XT is the winner, and very much so. (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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - 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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