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GeForce GT 340 1GB vs Radeon HD 6770 1GB

Intro

The GeForce GT 340 1GB has a GPU core speed of 550 MHz, and the 1024 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also is made up of 96 Stream Processors, 32 TAUs, and 8 ROPs.

Compare those specs to the Radeon HD 6770 1GB, which uses a 40 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 memory runs at a speed of 1050 MHz on this particular model. It features 800 SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 39 Watts (57%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 1GB should theoretically be quite a bit superior to the GeForce GT 340 1GB in general. (explain)

Radeon HD 6770 1GB 67200 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 12800 (24%)

Texel Rate

The Radeon HD 6770 1GB will be much (approximately 105%) better at anisotropic filtering than the GeForce GT 340 1GB. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 18400 (105%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6770 1GB is the winner, and very much so. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 10000 (227%)

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 340 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 GT 340 1GB Radeon HD 6770 1GB
Manufacturer nVidia AMD
Year February 2010 January 2011
Code Name GT215 Juniper XT
Memory 1024 MB 1024 MB
Core Speed 550 MHz 900 MHz
Memory Speed 3400 MHz 4200 MHz
Power (Max TDP) 69 watts 108 watts
Bandwidth 54400 MB/sec 67200 MB/sec
Texel Rate 17600 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 96 800
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR5 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 data (counted in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units 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 a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. 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 also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 340 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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