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GeForce GTX 460 1GB vs Radeon HD 6770 1GB

Intro

The GeForce GTX 460 1GB has a GPU clock speed of 675 MHz, and the 1024 MB of GDDR5 RAM runs at 900 MHz through a 256-bit bus. It also is made up of 336 SPUs, 56 TAUs, and 32 ROPs.

Compare all that to the Radeon HD 6770 1GB, which has GPU clock speed of 900 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 128-bit bus. It also features 800 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6770 1GB 108 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 52 Watts (48%)

Memory Bandwidth

The GeForce GTX 460 1GB, in theory, should be a lot faster than the Radeon HD 6770 1GB in general. (explain)

GeForce GTX 460 1GB 115200 MB/sec
Radeon HD 6770 1GB 67200 MB/sec
Difference: 48000 (71%)

Texel Rate

The GeForce GTX 460 1GB will be a small bit (about 5%) better at texture filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 6770 1GB 36000 Mtexels/sec
Difference: 1800 (5%)

Pixel Rate

The GeForce GTX 460 1GB is a lot (approximately 50%) more effective at full screen anti-aliasing than the Radeon HD 6770 1GB, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 460 1GB 21600 Mpixels/sec
Radeon HD 6770 1GB 14400 Mpixels/sec
Difference: 7200 (50%)

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 460 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 GTX 460 1GB Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year July 2010 January 2011
Code Name GF104 Juniper XT
Memory 1024 MB 1024 MB
Core Speed 675 MHz 900 MHz
Memory Speed 3600 MHz 4200 MHz
Power (Max TDP) 160 watts 108 watts
Bandwidth 115200 MB/sec 67200 MB/sec
Texel Rate 37800 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 336 800
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 1950 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 information (in units of megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock 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 one second.

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

Display Prices

Hide Prices

GeForce GTX 460 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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