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GeForce GTX 280 vs Radeon R9 M390X

Intro

The GeForce GTX 280 features a GPU core speed of 602 MHz, and the 1024 MB of GDDR3 memory runs at 1107 MHz through a 512-bit bus. It also features 240 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon R9 M390X, which uses a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 RAM runs at a frequency of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X 125 Watts
GeForce GTX 280 236 Watts
Difference: 111 Watts (89%)

Memory Bandwidth

The Radeon R9 M390X should in theory be a little bit faster than the GeForce GTX 280 in general. (explain)

Radeon R9 M390X 160000 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 18304 (13%)

Texel Rate

The Radeon R9 M390X will be much (more or less 92%) better at AF than the GeForce GTX 280. (explain)

Radeon R9 M390X 92544 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 44384 (92%)

Pixel Rate

The Radeon R9 M390X is just a bit (approximately 20%) more effective at AA than the GeForce GTX 280, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M390X 23136 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 3872 (20%)

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 GTX 280

Amazon.com

Check prices at:

Radeon R9 M390X

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 GTX 280 Radeon R9 M390X
Manufacturer nVidia AMD
Year June 17, 2008 2015
Code Name G200 Tonga
Memory 1024 MB 4096 MB
Core Speed 602 MHz 723 MHz
Memory Speed 2214 MHz 5000 MHz
Power (Max TDP) 236 watts 125 watts
Bandwidth 141696 MB/sec 160000 MB/sec
Texel Rate 48160 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 240 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 65 nm 28 nm
Transistors 1400 million (Unknown) million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 280

Amazon.com

Check prices at:

Radeon R9 M390X

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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