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GeForce GTS 450 vs Radeon HD 6750

Intro

The GeForce GTS 450 uses a 40 nm design. nVidia has clocked the core speed at 783 MHz. The GDDR5 memory works at a frequency of 902 MHz on this particular model. It features 192 SPUs as well as 32 TAUs and 16 ROPs.

Compare that to the Radeon HD 6750, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this card. It features 720 SPUs along with 36 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 86 Watts
GeForce GTS 450 106 Watts
Difference: 20 Watts (23%)

Memory Bandwidth

The Radeon HD 6750 should in theory be a little bit faster than the GeForce GTS 450 in general. (explain)

Radeon HD 6750 64000 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 6272 (11%)

Texel Rate

The Radeon HD 6750 will be just a bit (about 4%) more effective at anisotropic filtering than the GeForce GTS 450. (explain)

Radeon HD 6750 26100 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 1044 (4%)

Pixel Rate

The GeForce GTS 450 should be a little bit (more or less 8%) more effective at AA than the Radeon HD 6750, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon HD 6750 11600 Mpixels/sec
Difference: 928 (8%)

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 GTS 450

Amazon.com

Check prices at:

Radeon HD 6750

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 GTS 450 Radeon HD 6750
Manufacturer nVidia AMD
Year September 2010 January 2011
Code Name GF106 Juniper Pro
Memory 512 MB 512 MB
Core Speed 783 MHz 725 MHz
Memory Speed 3608 MHz 4000 MHz
Power (Max TDP) 106 watts 86 watts
Bandwidth 57728 MB/sec 64000 MB/sec
Texel Rate 25056 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 192 720
Texture Mapping Units 32 36
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1170 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTS 450

Amazon.com

Check prices at:

Radeon HD 6750

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.

Comments

3 Responses to “GeForce GTS 450 vs Radeon HD 6750”
Need advise on Graphics card - Tech Support Forums - TechIMO.com says:

[...] 2 you picked, look pretty close. in performance. GeForce GTS 450 vs Radeon HD 6750 – Performance Comparison Benchmarks @ Hardware Compare. I believe the 6750, is a re-badged 5750 They both require a 450watt power supply. If you get, or [...]

Placa Video - Page 2 - My Garage says:

[...] [...]

[NBA] Which GPU is Better - Choose from the list says:

[...] power consumption but the hd 6770 is by far better than both take a look at the comparison below GeForce GTS 450 vs Radeon HD 6750 – Performance Comparison Benchmarks @ Hardware Compare Radeon HD 6750 vs Radeon HD 6770 – Performance Comparison Benchmarks @ Hardware [...]

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