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GeForce GT 320 vs Radeon HD 6770 1GB

Intro

The GeForce GT 320 features clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 memory. It features 72 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6770 1GB, which has GPU clock speed of 900 MHz, and 1024 MB of GDDR5 memory set to run at 1050 MHz through a 128-bit bus. It also features 800 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320 43 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 65 Watts (151%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6770 1GB should perform much faster than the GeForce GT 320 overall. (explain)

Radeon HD 6770 1GB 67200 MB/sec
GeForce GT 320 25280 MB/sec
Difference: 41920 (166%)

Texel Rate

The Radeon HD 6770 1GB is a lot (about 178%) better at texture filtering than the GeForce GT 320. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 23040 (178%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6770 1GB is superior to the GeForce GT 320, by a large margin. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 10080 (233%)

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 320

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 GT 320 Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year February 2010 January 2011
Code Name GT215 Juniper XT
Memory 1024 MB 1024 MB
Core Speed 540 MHz 900 MHz
Memory Speed 1580 MHz 4200 MHz
Power (Max TDP) 43 watts 108 watts
Bandwidth 25280 MB/sec 67200 MB/sec
Texel Rate 12960 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 72 800
Texture Mapping Units 24 40
Render Output Units 8 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, 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, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 320

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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