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GeForce GT 310 vs Radeon HD 6770

Intro

The GeForce GT 310 features a core clock frequency of 589 MHz and a DDR2 memory speed of 1000 MHz. It also features a 64-bit memory bus, and uses a 40 nm design. It features 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

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

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310 31 Watts
Radeon HD 6770 108 Watts
Difference: 77 Watts (248%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 should theoretically be quite a bit better than the GeForce GT 310 overall. (explain)

Radeon HD 6770 67200 MB/sec
GeForce GT 310 16000 MB/sec
Difference: 51200 (320%)

Texel Rate

The Radeon HD 6770 is quite a bit (approximately 664%) more effective at texture filtering than the GeForce GT 310. (explain)

Radeon HD 6770 36000 Mtexels/sec
GeForce GT 310 4712 Mtexels/sec
Difference: 31288 (664%)

Pixel Rate

The Radeon HD 6770 should be much (about 511%) better at full screen anti-aliasing than the GeForce GT 310, and also should be capable of handling higher screen resolutions better. (explain)

Radeon HD 6770 14400 Mpixels/sec
GeForce GT 310 2356 Mpixels/sec
Difference: 12044 (511%)

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 GT 310

Amazon.com

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Radeon HD 6770

Amazon.com

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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 GT 310 Radeon HD 6770
Manufacturer nVidia AMD
Year November 2009 January 2011
Code Name GT218 Juniper XT
Memory 512 MB 512 MB
Core Speed 589 MHz 900 MHz
Memory Speed 2000 MHz 4200 MHz
Power (Max TDP) 31 watts 108 watts
Bandwidth 16000 MB/sec 67200 MB/sec
Texel Rate 4712 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 2356 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 16 800
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 64-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 260 million 1040 million
Bus PCIe 2.0 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock 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 fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GT 310

Amazon.com

Check prices at:

Radeon HD 6770

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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