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GeForce GTX 285 1GB vs Radeon R9 270X

Intro

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

Compare all that to the Radeon R9 270X, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM works at a speed of 1400 MHz on this particular card. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270X 180 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 24 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X should be a bit faster than the GeForce GTX 285 1GB overall. (explain)

Radeon R9 270X 179200 MB/sec
GeForce GTX 285 1GB 158976 MB/sec
Difference: 20224 (13%)

Texel Rate

The Radeon R9 270X should be a lot (about 54%) more effective at AF than the GeForce GTX 285 1GB. (explain)

Radeon R9 270X 80000 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 28160 (54%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 270X is the winner, by far. (explain)

Radeon R9 270X 32000 Mpixels/sec
GeForce GTX 285 1GB 20736 Mpixels/sec
Difference: 11264 (54%)

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

Display Prices

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GeForce GTX 285 1GB

Amazon.com

Radeon R9 270X

Amazon.com

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 R9 270X
Manufacturer nVidia AMD
Year January 15, 2009 October 2013
Code Name G200b Curacao XT
Memory 1024 MB 2048 MB
Core Speed 648 MHz 1000 MHz
Memory Speed 2484 MHz 5600 MHz
Power (Max TDP) 204 watts 180 watts
Bandwidth 158976 MB/sec 179200 MB/sec
Texel Rate 51840 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 240 1280
Texture Mapping Units 80 80
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 11.2
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 285 1GB

Amazon.com

Radeon R9 270X

Amazon.com

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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