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GeForce GTX 280 vs Radeon HD 5870

Intro

The GeForce GTX 280 uses a 65 nm design. nVidia has clocked the core frequency at 602 MHz. The GDDR3 RAM is set to run at a frequency of 1107 MHz on this card. It features 240 SPUs as well as 80 TAUs and 32 ROPs.

Compare those specifications to the Radeon HD 5870, which features GPU core speed of 850 MHz, and 1024 MB of GDDR5 memory set to run at 1200 MHz through a 256-bit bus. It also is comprised of 1600(320x5) Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870 188 Watts
GeForce GTX 280 236 Watts
Difference: 48 Watts (26%)

Memory Bandwidth

In theory, the Radeon HD 5870 should be a bit faster than the GeForce GTX 280 overall. (explain)

Radeon HD 5870 153600 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 11904 (8%)

Texel Rate

The Radeon HD 5870 is quite a bit (more or less 41%) more effective at AF than the GeForce GTX 280. (explain)

Radeon HD 5870 68000 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 19840 (41%)

Pixel Rate

The Radeon HD 5870 will be much (about 41%) faster with regards to anti-aliasing than the GeForce GTX 280, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5870 27200 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 7936 (41%)

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 HD 5870

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 HD 5870
Manufacturer nVidia AMD
Year June 17, 2008 September 23, 2009
Code Name G200 Cypress XT
Memory 1024 MB 1024 MB
Core Speed 602 MHz 850 MHz
Memory Speed 2214 MHz 4800 MHz
Power (Max TDP) 236 watts 188 watts
Bandwidth 141696 MB/sec 153600 MB/sec
Texel Rate 48160 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 240 1600(320x5)
Texture Mapping Units 80 80
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 65 nm 40 nm
Transistors 1400 million 2154 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. 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 output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 280

Amazon.com

Check prices at:

Radeon HD 5870

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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