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GeForce GTX 750 vs Radeon HD 7770

Intro

The GeForce GTX 750 comes with core clock speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs as well as 32 TAUs and 16 ROPs.

Compare those specs to the Radeon HD 7770, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 750 3958 points
Radeon HD 7770 3180 points
Difference: 778 (24%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750 55 Watts
Radeon HD 7770 80 Watts
Difference: 25 Watts (45%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 750 should in theory be just a bit better than the Radeon HD 7770 in general. (explain)

GeForce GTX 750 80000 MB/sec
Radeon HD 7770 72000 MB/sec
Difference: 8000 (11%)

Texel Rate

The Radeon HD 7770 is much (more or less 23%) faster with regards to AF than the GeForce GTX 750. (explain)

Radeon HD 7770 40000 Mtexels/sec
GeForce GTX 750 32640 Mtexels/sec
Difference: 7360 (23%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 750 is a better choice, not by a very large margin though. (explain)

GeForce GTX 750 16320 Mpixels/sec
Radeon HD 7770 16000 Mpixels/sec
Difference: 320 (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 750

Amazon.com

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Radeon HD 7770

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 7770
Manufacturer nVidia AMD
Year February 2014 February 2012
Code Name GM107 Cape Verde XT
Memory 1024 MB 1024 MB
Core Speed 1020 MHz 1000 MHz
Memory Speed 5000 MHz 4500 MHz
Power (Max TDP) 55 watts 80 watts
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 32640 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16320 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 512 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1870 million 1500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.4 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 750

Amazon.com

Check prices at:

Radeon HD 7770

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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