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GeForce GTS 450 1GB vs Radeon HD 6770 1GB

Intro

The GeForce GTS 450 1GB comes with core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs along with 32 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 6770 1GB, which makes use of a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory works at a speed of 1050 MHz on this model. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 2 Watts (2%)

Memory Bandwidth

In theory, the Radeon HD 6770 1GB should be a small bit faster than the GeForce GTS 450 1GB in general. (explain)

Radeon HD 6770 1GB 67200 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 9472 (16%)

Texel Rate

The Radeon HD 6770 1GB should be a lot (about 44%) better at texture filtering than the GeForce GTS 450 1GB. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
GeForce GTS 450 1GB 25056 Mtexels/sec
Difference: 10944 (44%)

Pixel Rate

The Radeon HD 6770 1GB should be a bit (more or less 15%) better at anti-aliasing than the GeForce GTS 450 1GB, and also should be able to handle higher screen resolutions more effectively. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
GeForce GTS 450 1GB 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

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GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6770 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 GTS 450 1GB Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year September 2010 January 2011
Code Name GF106 Juniper XT
Memory 1024 MB 1024 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 largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once 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 are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core 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 applied in one second.

Pixel Rate: Pixel rate is the most 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 Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon HD 6770 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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