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GeForce GTX 750 vs Radeon HD 3870 512MB

Intro

The GeForce GTX 750 makes use of a 28 nm design. nVidia has clocked the core frequency at 1020 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 512 SPUs along with 32 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 3870 512MB, which comes with a core clock speed of 775 MHz and a GDDR3 memory speed of 900 MHz. It also features a 256-bit 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

Power Consumption (Max TDP)

GeForce GTX 750 55 Watts
Radeon HD 3870 512MB 106 Watts
Difference: 51 Watts (93%)

Memory Bandwidth

In theory, the GeForce GTX 750 is 39% quicker than the Radeon HD 3870 512MB overall, because of its higher bandwidth. (explain)

GeForce GTX 750 80000 MB/sec
Radeon HD 3870 512MB 57600 MB/sec
Difference: 22400 (39%)

Texel Rate

The GeForce GTX 750 will be much (approximately 163%) better at texture filtering than the Radeon HD 3870 512MB. (explain)

GeForce GTX 750 32640 Mtexels/sec
Radeon HD 3870 512MB 12400 Mtexels/sec
Difference: 20240 (163%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 750 is a better choice, by far. (explain)

GeForce GTX 750 16320 Mpixels/sec
Radeon HD 3870 512MB 12400 Mpixels/sec
Difference: 3920 (32%)

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 750

Amazon.com

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Radeon HD 3870 512MB

Amazon.com

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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 512MB
Manufacturer nVidia AMD
Year February 2014 Nov 19, 2007
Code Name GM107 RV670 XT
Memory 1024 MB 512 MB
Core Speed 1020 MHz 775 MHz
Memory Speed 5000 MHz 1800 MHz
Power (Max TDP) 55 watts 106 watts
Bandwidth 80000 MB/sec 57600 MB/sec
Texel Rate 32640 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 512 320(64x5)
Texture Mapping Units 32 16
Render Output Units 16 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors 1870 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 2.0 x16/AGP 8x
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 (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 potential to get to the max fill rate.

Display Prices

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GeForce GTX 750

Amazon.com

Check prices at:

Radeon HD 3870 512MB

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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