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GeForce GTX 275 vs Radeon RX 460

Intro

The GeForce GTX 275 makes use of a 55 nm design. nVidia has set the core speed at 633 MHz. The GDDR3 RAM runs at a speed of 1134 MHz on this particular card. It features 240 SPUs as well as 80 Texture Address Units and 28 ROPs.

Compare all that to the Radeon RX 460, which uses a 14 nm design. AMD has set the core speed at 1090 MHz. The GDDR5 RAM works at a speed of 1750 MHz on this particular model. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
GeForce GTX 275 219 Watts
Difference: 144 Watts (192%)

Memory Bandwidth

Performance-wise, the GeForce GTX 275 should theoretically be a little bit superior to the Radeon RX 460 overall. (explain)

GeForce GTX 275 127008 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 15008 (13%)

Texel Rate

The Radeon RX 460 is a lot (more or less 21%) more effective at anisotropic filtering than the GeForce GTX 275. (explain)

Radeon RX 460 61040 Mtexels/sec
GeForce GTX 275 50640 Mtexels/sec
Difference: 10400 (21%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 275 is superior to the Radeon RX 460, not by a very large margin though. (explain)

GeForce GTX 275 17724 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 284 (2%)

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 275

Amazon.com

Radeon RX 460

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 275 Radeon RX 460
Manufacturer nVidia AMD
Year April 9, 2009 August 2016
Code Name G200b Polaris 11
Memory 896 MB 4096 MB
Core Speed 633 MHz 1090 MHz
Memory Speed 2268 MHz 7000 MHz
Power (Max TDP) 219 watts 75 watts
Bandwidth 127008 MB/sec 112000 MB/sec
Texel Rate 50640 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 17724 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 240 896
Texture Mapping Units 80 56
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 128-bit
Fab Process 55 nm 14 nm
Transistors 1400 million 3000 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12.0
OpenGL Version OpenGL 3.1 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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

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