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GeForce GTX 285 1GB vs Radeon R9 270

Intro

The GeForce GTX 285 1GB has a core clock speed of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also features a 512-bit memory bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Compare those specs to the Radeon R9 270, which features core clock speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1280 SPUs as well as 80 Texture Address Units 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 1GB 204 Watts
Difference: 54 Watts (36%)

Memory Bandwidth

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

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

Texel Rate

The Radeon R9 270 will be much (approximately 39%) faster with regards to anisotropic filtering than the GeForce GTX 285 1GB. (explain)

Radeon R9 270 72000 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 20160 (39%)

Pixel Rate

The Radeon R9 270 will be a lot (about 39%) faster with regards to anti-aliasing than the GeForce GTX 285 1GB, and also capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 270 28800 Mpixels/sec
GeForce GTX 285 1GB 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 1GB

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 1GB Radeon R9 270
Manufacturer nVidia AMD
Year January 15, 2009 November 2013
Code Name G200b Curacao Pro
Memory 1024 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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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, especially 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 285 1GB

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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