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GeForce GTX 285 1GB vs Radeon HD 7870 XT

Intro

The GeForce GTX 285 1GB comes with core speeds of 648 MHz on the GPU, and 1242 MHz on the 1024 MB of GDDR3 memory. It features 240 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon HD 7870 XT, which features a GPU core clock speed of 925 MHz, and 2048 MB of GDDR5 memory running at 1500 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 19 Watts (10%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 XT should perform much faster than the GeForce GTX 285 1GB overall. (explain)

Radeon HD 7870 XT 192000 MB/sec
GeForce GTX 285 1GB 158976 MB/sec
Difference: 33024 (21%)

Texel Rate

The Radeon HD 7870 XT is quite a bit (approximately 71%) better at AF than the GeForce GTX 285 1GB. (explain)

Radeon HD 7870 XT 88800 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 36960 (71%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7870 XT is the winner, and very much so. (explain)

Radeon HD 7870 XT 29600 Mpixels/sec
GeForce GTX 285 1GB 20736 Mpixels/sec
Difference: 8864 (43%)

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 285 1GB

Amazon.com

Check prices at:

Radeon HD 7870 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 GTX 285 1GB Radeon HD 7870 XT
Manufacturer nVidia AMD
Year January 15, 2009 November 2012
Code Name G200b Tahiti LE
Memory 1024 MB 2048 MB
Core Speed 648 MHz 925 MHz
Memory Speed 2484 MHz 6000 MHz
Power (Max TDP) 204 watts 185 watts
Bandwidth 158976 MB/sec 192000 MB/sec
Texel Rate 51840 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 240 1536
Texture Mapping Units 80 96
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 4313 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 texture map elements (texels) that are 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 higher this number, the better the 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 the graphics card 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 card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 1GB

Amazon.com

Check prices at:

Radeon HD 7870 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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