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GeForce GTX 650 vs Radeon HD 7750

Intro

The GeForce GTX 650 has a GPU core speed of 1058 MHz, and the 2048 MB of GDDR5 RAM runs at 1250 MHz through a 128-bit bus. It also is made up of 384 Stream Processors, 32 TAUs, and 16 ROPs.

Compare all that to the Radeon HD 7750, which comes with a clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 512 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce GTX 650 64 Watts
Difference: 9 Watts (16%)

Memory Bandwidth

The GeForce GTX 650 should in theory perform a little bit faster than the Radeon HD 7750 in general. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 8000 (11%)

Texel Rate

The GeForce GTX 650 will be quite a bit (about 32%) better at texture filtering than the Radeon HD 7750. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 8256 (32%)

Pixel Rate

The GeForce GTX 650 should be quite a bit (about 32%) better at anti-aliasing than the Radeon HD 7750, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 4128 (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

GeForce GTX 650

Amazon.com

Radeon HD 7750

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 650 Radeon HD 7750
Manufacturer nVidia AMD
Year September 2012 February 2012
Code Name GK107 Cape Verde Pro
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 2048 MB 1024 MB
Core Speed 1058 MHz 800 MHz
Shader Speed 1058 MHz (N/A) MHz
Memory Speed 1250 MHz (5000 MHz effective) 1125 MHz (4500 MHz effective)
Unified Shaders 384 512
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2
Power (Max TDP) 64 watts 55 watts
Shader Model 5.0 5.0
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 33856 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 12800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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

Comments

2 Responses to “GeForce GTX 650 vs Radeon HD 7750”
[...] to GeForce GTX 650 vs Radeon HD 7750 – Performance Comparison Benchmarks @ Hardware Compare radeon consumes less energy but geforce performs better. as long as geforce comes with hdmi [...]
tarun says:
gtx is better than hd 7750 and 7770

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