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GeForce GTX 650 vs Radeon HD 6750 1GB

Intro

The GeForce GTX 650 comes with core speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 RAM. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 6750 1GB, which has a core clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is comprised of 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
Radeon HD 6750 1GB 86 Watts
Difference: 22 Watts (34%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should in theory be a lot better than the Radeon HD 6750 1GB overall. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 6750 1GB 64000 MB/sec
Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 should be quite a bit (more or less 30%) faster with regards to texture filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon HD 6750 1GB 26100 Mtexels/sec
Difference: 7756 (30%)

Pixel Rate

The GeForce GTX 650 should be much (about 46%) more effective at anti-aliasing than the Radeon HD 6750 1GB, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 6750 1GB 11600 Mpixels/sec
Difference: 5328 (46%)

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

Check prices at:

Radeon HD 6750 1GB

Amazon.com

Check prices at:

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 6750 1GB
Manufacturer nVidia AMD
Year September 2012 January 2011
Code Name GK107 Juniper Pro
Memory 1024 MB 1024 MB
Core Speed 1058 MHz 725 MHz
Memory Speed 5000 MHz 4000 MHz
Power (Max TDP) 64 watts 86 watts
Bandwidth 80000 MB/sec 64000 MB/sec
Texel Rate 33856 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 384 720
Texture Mapping Units 32 36
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 1040 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 650

Amazon.com

Check prices at:

Radeon HD 6750 1GB

Amazon.com

Check prices at:

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.

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