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GeForce GTX 650 vs Radeon HD 7750

Intro

The GeForce GTX 650 makes use of a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 memory is set to run at a speed of 1250 MHz on this card. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 7750, which makes use of a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM is set to run at a speed of 1125 MHz on this specific card. It features 512 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator 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

In theory, the GeForce GTX 650 should be a small 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 (approximately 32%) more effective 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 is much (more or less 32%) more effective at anti-aliasing than the Radeon HD 7750, and should be able to handle higher screen resolutions more effectively. (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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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 worked out by multiplying the number of Render Output Units 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 rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Comments

One Response 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 [...]

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