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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 speed at 1058 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this particular model. It features 384 SPUs along with 32 TAUs and 16 ROPs.

Compare all of that to the Radeon HD 7750, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

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

The GeForce GTX 650 should theoretically perform 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 should be quite a bit (about 32%) better at anisotropic 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 quite a bit (approximately 32%) faster with regards to full screen anti-aliasing than the Radeon HD 7750, and should 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
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: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max 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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