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GeForce GTX 750 vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 750 features a clock frequency of 1020 MHz and a GDDR5 memory speed of 1250 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon HD 3870 X2 1GB, which features a clock speed of 825 MHz and a GDDR4 memory speed of 1126 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3870 X2 1GB is 80% faster than the GeForce GTX 750 in general, due to its greater data rate. (explain)

Radeon HD 3870 X2 1GB 144128 MB/sec
GeForce GTX 750 80000 MB/sec
Difference: 64128 (80%)

Texel Rate

The GeForce GTX 750 will be much (about 24%) more effective at anisotropic filtering than the Radeon HD 3870 X2 1GB. (explain)

GeForce GTX 750 32640 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 6240 (24%)

Pixel Rate

The Radeon HD 3870 X2 1GB should be a lot (approximately 62%) faster with regards to anti-aliasing than the GeForce GTX 750, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 3870 X2 1GB 26400 Mpixels/sec
GeForce GTX 750 16320 Mpixels/sec
Difference: 10080 (62%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 750

Amazon.com

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Radeon HD 3870 X2 1GB

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 750 Radeon HD 3870 X2 1GB
Manufacturer nVidia AMD
Year February 2014 Jan 28, 2008
Code Name GM107 R680
Memory 1024 MB 1024 MB (x2)
Core Speed 1020 MHz 825 MHz (x2)
Memory Speed 5000 MHz 2252 MHz (x2)
Power (Max TDP) 55 watts (Unknown) watts
Bandwidth 80000 MB/sec 144128 MB/sec
Texel Rate 32640 Mtexels/sec 26400 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 26400 Mpixels/sec
Unified Shaders 512 320(64x5) (x2)
Texture Mapping Units 32 16 (x2)
Render Output Units 16 16 (x2)
Bus Type GDDR5 GDDR4
Bus Width 128-bit 256-bit (x2)
Fab Process 28 nm 55 nm
Transistors 1870 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 11.0 DirectX 10.1
OpenGL Version OpenGL 4.4 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 750

Amazon.com

Check prices at:

Radeon HD 3870 X2 1GB

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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