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GeForce GTX 285 2GB vs Radeon R9 270

Intro

The GeForce GTX 285 2GB has a clock speed of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also makes use of a 512-bit memory bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Compare all that to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this model. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 54 Watts (36%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270 should in theory be just a bit better than the GeForce GTX 285 2GB in general. (explain)

Radeon R9 270 179200 MB/sec
GeForce GTX 285 2GB 158976 MB/sec
Difference: 20224 (13%)

Texel Rate

The Radeon R9 270 should be a lot (about 39%) faster with regards to texture filtering than the GeForce GTX 285 2GB. (explain)

Radeon R9 270 72000 Mtexels/sec
GeForce GTX 285 2GB 51840 Mtexels/sec
Difference: 20160 (39%)

Pixel Rate

The Radeon R9 270 is a lot (approximately 39%) faster with regards to anti-aliasing than the GeForce GTX 285 2GB, and able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 270 28800 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 8064 (39%)

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 2GB

Amazon.com

Check prices at:

Radeon R9 270

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 2GB Radeon R9 270
Manufacturer nVidia AMD
Year January 15, 2009 November 2013
Code Name G200b Curacao Pro
Memory 2048 MB 2048 MB
Core Speed 648 MHz 900 MHz
Memory Speed 2484 MHz 5600 MHz
Power (Max TDP) 204 watts 150 watts
Bandwidth 158976 MB/sec 179200 MB/sec
Texel Rate 51840 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 28800 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 largest amount of information (in units of MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 285 2GB

Amazon.com

Check prices at:

Radeon R9 270

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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