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GeForce GTX 285 1GB vs Radeon HD 7850

Intro

The GeForce GTX 285 1GB features a GPU core clock speed of 648 MHz, and the 1024 MB of GDDR3 RAM runs at 1242 MHz through a 512-bit bus. It also is made up of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 7850, which has core clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 74 Watts (57%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB will be 4% quicker than the Radeon HD 7850 in general, because of its higher data rate. (explain)

GeForce GTX 285 1GB 158976 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 5376 (4%)

Texel Rate

The Radeon HD 7850 is just a bit (more or less 6%) better at texture filtering than the GeForce GTX 285 1GB. (explain)

Radeon HD 7850 55040 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 3200 (6%)

Pixel Rate

The Radeon HD 7850 should be much (approximately 33%) more effective at full screen anti-aliasing than the GeForce GTX 285 1GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7850 27520 Mpixels/sec
GeForce GTX 285 1GB 20736 Mpixels/sec
Difference: 6784 (33%)

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 7850

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 7850
Manufacturer nVidia AMD
Year January 15, 2009 March 2012
Code Name G200b Pitcairn Pro
Memory 1024 MB 2048 MB
Core Speed 648 MHz 860 MHz
Memory Speed 2484 MHz 4800 MHz
Power (Max TDP) 204 watts 130 watts
Bandwidth 158976 MB/sec 153600 MB/sec
Texel Rate 51840 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 240 1024
Texture Mapping Units 80 64
Render Output Units 32 32
Bus Type GDDR3 GDDR5
Bus Width 512-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 2800 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 1GB

Amazon.com

Check prices at:

Radeon HD 7850

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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