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GeForce GTS 450 vs Radeon HD 6770


The GeForce GTS 450 features a GPU clock speed of 783 MHz, and the 512 MB of GDDR5 memory is set to run at 902 MHz through a 128-bit bus. It also features 192 Stream Processors, 32 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon HD 6770, which comes with a clock speed of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
Radeon HD 6770 108 Watts
Difference: 2 Watts (2%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6770 should be 16% quicker than the GeForce GTS 450 in general, because of its greater bandwidth. (explain)

Radeon HD 6770 67200 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 9472 (16%)

Texel Rate

The Radeon HD 6770 is a lot (more or less 44%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 10944 (44%)

Pixel Rate

The Radeon HD 6770 is just a bit (more or less 15%) better at AA than the GeForce GTS 450, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 6770 14400 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 1872 (15%)

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

Display Prices

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GeForce GTS 450

Radeon HD 6770

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.


Display Specifications

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Model GeForce GTS 450 Radeon HD 6770
Manufacturer nVidia AMD
Year September 2010 January 2011
Code Name GF106 Juniper XT
Memory 512 MB 512 MB
Core Speed 783 MHz 900 MHz
Memory Speed 3608 MHz 4200 MHz
Power (Max TDP) 106 watts 108 watts
Bandwidth 57728 MB/sec 67200 MB/sec
Texel Rate 25056 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 192 800
Texture Mapping Units 32 40
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 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.


3 Responses to “GeForce GTS 450 vs Radeon HD 6770”
pc gaming 1300lei - Page 3 - My Garage says:

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achizitionare placa video! - My Garage says:

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Placa video recomandare + (probabil sursa) says:

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