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GeForce GTX 750 Ti vs Radeon R9 270X

Intro

The GeForce GTX 750 Ti comes with a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1350 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Compare those specs to the Radeon R9 270X, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 memory works at a frequency of 1400 MHz on this specific model. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 Ti 60 Watts
Radeon R9 270X 180 Watts
Difference: 120 Watts (200%)

Memory Bandwidth

The Radeon R9 270X should theoretically be a lot faster than the GeForce GTX 750 Ti overall. (explain)

Radeon R9 270X 179200 MB/sec
GeForce GTX 750 Ti 86400 MB/sec
Difference: 92800 (107%)

Texel Rate

The Radeon R9 270X is quite a bit (more or less 96%) better at texture filtering than the GeForce GTX 750 Ti. (explain)

Radeon R9 270X 80000 Mtexels/sec
GeForce GTX 750 Ti 40800 Mtexels/sec
Difference: 39200 (96%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 270X is the winner, by a large margin. (explain)

Radeon R9 270X 32000 Mpixels/sec
GeForce GTX 750 Ti 16320 Mpixels/sec
Difference: 15680 (96%)

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

GeForce GTX 750 Ti

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

Model GeForce GTX 750 Ti Radeon R9 270X
Manufacturer nVidia AMD
Year February 2014 October 2013
Code Name GM107 Curacao XT
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 2048 MB 2048 MB
Core Speed 1020 MHz 1000 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1350 MHz (5400 MHz effective) 1400 MHz (5600 MHz effective)
Unified Shaders 640 1280
Texture Mapping Units 40 80
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.4 OpenGL 4.3
Power (Max TDP) 60 watts 180 watts
Shader Model 5.0 5.0
Bandwidth 86400 MB/sec 179200 MB/sec
Texel Rate 40800 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 32000 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be processed per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

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