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GeForce GTX 750 vs Radeon HD 3870 X2 1GB

Intro

The GeForce GTX 750 comes with a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 512 SPUs, 32 TAUs, and 16 ROPs.

Compare all of that to the Radeon HD 3870 X2 1GB, which features clock speeds of 825 MHz on the GPU, and 1126 MHz on the 1024 MB of GDDR4 RAM. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 3870 X2 1GB should theoretically be a lot superior to the GeForce GTX 750 overall. (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 (more or less 24%) more effective at AF 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

If using a high resolution is important to you, then the Radeon HD 3870 X2 1GB is the winner, and very much so. (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

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.

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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card 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 the card's 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max 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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