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GeForce GTX 650 vs Radeon HD 7750

Intro

The GeForce GTX 650 comes with a core clock frequency of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 32 Texture Address Units, and 16 ROPs.

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

Display Graphs

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(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 be a small bit faster than the Radeon HD 7750 overall. (explain)

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

Texel Rate

The GeForce GTX 650 is a lot (approximately 32%) more effective at AF 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 (more or less 32%) faster with regards to FSAA than the Radeon HD 7750, and will be capable of handling higher 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

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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

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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 max amount of information (in units of megabytes per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, the result should 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the 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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