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GeForce GT 340 1GB vs Radeon HD 3470 256MB

Intro

The GeForce GT 340 1GB has core clock speeds of 550 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 96 SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 3470 256MB, which has a clock speed of 800 MHz and a DDR2 memory frequency of 950 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is made up of 40(8x5) SPUs, 4 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GT 340 1GB should in theory be quite a bit faster than the Radeon HD 3470 256MB overall. (explain)

GeForce GT 340 1GB 54400 MB/sec
Radeon HD 3470 256MB 30400 MB/sec
Difference: 24000 (79%)

Texel Rate

The GeForce GT 340 1GB will be a lot (about 450%) better at anisotropic filtering than the Radeon HD 3470 256MB. (explain)

GeForce GT 340 1GB 17600 Mtexels/sec
Radeon HD 3470 256MB 3200 Mtexels/sec
Difference: 14400 (450%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 340 1GB is the winner, by a large margin. (explain)

GeForce GT 340 1GB 4400 Mpixels/sec
Radeon HD 3470 256MB 3200 Mpixels/sec
Difference: 1200 (38%)

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 3470 256MB

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 3470 256MB
Manufacturer nVidia AMD
Year February 2010 2008
Code Name GT215 RV620 PRO
Memory 1024 MB 256 MB
Core Speed 550 MHz 800 MHz
Memory Speed 3400 MHz 1900 MHz
Power (Max TDP) 69 watts (Unknown) watts
Bandwidth 54400 MB/sec 30400 MB/sec
Texel Rate 17600 Mtexels/sec 3200 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 3200 Mpixels/sec
Unified Shaders 96 40(8x5)
Texture Mapping Units 32 4
Render Output Units 8 4
Bus Type GDDR5 DDR2
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

Radeon HD 3470 256MB

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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