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GeForce GT 340 1GB vs Radeon HD 5670

Intro

The GeForce GT 340 1GB makes use of a 40 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR5 memory works at a speed of 850 MHz on this particular model. It features 96 SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 5670, which comes with a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also features 400(80x5) SPUs, 20 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670 61 Watts
GeForce GT 340 1GB 69 Watts
Difference: 8 Watts (13%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5670 should theoretically be a small bit superior to the GeForce GT 340 1GB overall. (explain)

Radeon HD 5670 64000 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 9600 (18%)

Texel Rate

The GeForce GT 340 1GB will be a little bit (approximately 14%) better at AF than the Radeon HD 5670. (explain)

GeForce GT 340 1GB 17600 Mtexels/sec
Radeon HD 5670 15500 Mtexels/sec
Difference: 2100 (14%)

Pixel Rate

The Radeon HD 5670 should be quite a bit (approximately 41%) more effective at AA than the GeForce GT 340 1GB, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 5670 6200 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 1800 (41%)

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

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Radeon HD 5670

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 340 1GB Radeon HD 5670
Manufacturer nVidia AMD
Year February 2010 January 14, 2010
Code Name GT215 Redwood XT
Memory 1024 MB 1024 MB
Core Speed 550 MHz 775 MHz
Memory Speed 3400 MHz 4000 MHz
Power (Max TDP) 69 watts 61 watts
Bandwidth 54400 MB/sec 64000 MB/sec
Texel Rate 17600 Mtexels/sec 15500 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6200 Mpixels/sec
Unified Shaders 96 400(80x5)
Texture Mapping Units 32 20
Render Output Units 8 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 627 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 are processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 5670

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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