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GeForce GTX 650 vs Radeon HD 7750

Intro

The GeForce GTX 650 has clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 32 TAUs and 16 ROPs.

Compare that to the Radeon HD 7750, which has core speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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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 perform just a 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 much (about 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 is much (approximately 32%) more effective at FSAA than the Radeon HD 7750, and capable of handling higher resolutions without losing too much performance. (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
Memory 1024 MB 1024 MB
Core Speed 1058 MHz 800 MHz
Memory Speed 5000 MHz 4500 MHz
Power (Max TDP) 64 watts 55 watts
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 33856 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 384 512
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1300 million 1500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.1
OpenGL Version OpenGL 4.3 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 are applied in one second. This number is calculated by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth of the card - 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”
Custom Computers...Who Has Them? - Page 12 - Nissan Forums : Nissan Forum says:

[...] 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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