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GeForce GTX 280 vs Radeon R9 M395X

Intro

The GeForce GTX 280 makes use of a 65 nm design. nVidia has clocked the core frequency at 602 MHz. The GDDR3 memory works at a speed of 1107 MHz on this card. It features 240 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Compare those specs to the Radeon R9 M395X, which has GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X 125 Watts
GeForce GTX 280 236 Watts
Difference: 111 Watts (89%)

Memory Bandwidth

In theory, the Radeon R9 M395X should be a small bit faster than the GeForce GTX 280 overall. (explain)

Radeon R9 M395X 160000 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 18304 (13%)

Texel Rate

The Radeon R9 M395X will be a lot (about 92%) better at anisotropic filtering than the GeForce GTX 280. (explain)

Radeon R9 M395X 92544 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 44384 (92%)

Pixel Rate

The Radeon R9 M395X is just a bit (approximately 20%) faster with regards to full screen anti-aliasing than the GeForce GTX 280, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon R9 M395X 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

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Radeon R9 M395X

Amazon.com

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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 M395X
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 largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 280

Amazon.com

Check prices at:

Radeon R9 M395X

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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