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GeForce 8800 GT 512MB vs Radeon R9 390X 8G

Intro

The GeForce 8800 GT 512MB makes use of a 65 nm design. nVidia has set the core speed at 600 MHz. The GDDR3 RAM works at a speed of 900 MHz on this particular card. It features 112 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Compare those specs to the Radeon R9 390X 8G, which has GPU core speed of 1050 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is made up of 2816 Stream Processors, 176 TAUs, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB 105 Watts
Radeon R9 390X 8G 275 Watts
Difference: 170 Watts (162%)

Memory Bandwidth

Theoretically, the Radeon R9 390X 8G should be a lot faster than the GeForce 8800 GT 512MB in general. (explain)

Radeon R9 390X 8G 384000 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 326400 (567%)

Texel Rate

The Radeon R9 390X 8G is much (about 450%) faster with regards to texture filtering than the GeForce 8800 GT 512MB. (explain)

Radeon R9 390X 8G 184800 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 151200 (450%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 390X 8G is a better choice, and very much so. (explain)

Radeon R9 390X 8G 67200 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 57600 (600%)

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 8800 GT 512MB

Amazon.com

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Radeon R9 390X 8G

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 8800 GT 512MB Radeon R9 390X 8G
Manufacturer nVidia AMD
Year Oct 2007 June 2015
Code Name G92 Grenada XT
Memory 512 MB 8192 MB
Core Speed 600 MHz 1050 MHz
Memory Speed 1800 MHz 6000 MHz
Power (Max TDP) 105 watts 275 watts
Bandwidth 57600 MB/sec 384000 MB/sec
Texel Rate 33600 Mtexels/sec 184800 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 67200 Mpixels/sec
Unified Shaders 112 2816
Texture Mapping Units 56 176
Render Output Units 16 64
Bus Type GDDR3 GDDR5
Bus Width 256-bit 512-bit
Fab Process 65 nm 28 nm
Transistors 754 million 6200 million
Bus PCIe x16 2.0 PCIe 3.0 ×16
DirectX Version DirectX 10 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 512MB

Amazon.com

Check prices at:

Radeon R9 390X 8G

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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