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GeForce GT 340 vs Radeon HD 3850 X2

Intro

The GeForce GT 340 has clock speeds of 550 MHz on the GPU, and 850 MHz on the 512 MB of GDDR5 RAM. It features 96 SPUs along with 32 Texture Address Units and 8 ROPs.

Compare that to the Radeon HD 3850 X2, which features GPU clock speed of 668 MHz, and 512 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also features 320(64x5) Stream Processors, 16 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 X2 should theoretically be a lot faster than the GeForce GT 340 in general. (explain)

Radeon HD 3850 X2 105984 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 51584 (95%)

Texel Rate

The Radeon HD 3850 X2 is a lot (about 21%) more effective at anisotropic filtering than the GeForce GT 340. (explain)

Radeon HD 3850 X2 21376 Mtexels/sec
GeForce GT 340 17600 Mtexels/sec
Difference: 3776 (21%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3850 X2 is a better choice, by far. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 16976 (386%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GT 340

Amazon.com

Check prices at:

Radeon HD 3850 X2

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 Radeon HD 3850 X2
Manufacturer nVidia AMD
Year February 2010 Apr 4, 2008
Code Name GT215 RV670 PRO
Memory 512 MB 512 MB (x2)
Core Speed 550 MHz 668 MHz (x2)
Memory Speed 3400 MHz 1656 MHz (x2)
Power (Max TDP) 69 watts (Unknown) watts
Bandwidth 54400 MB/sec 105984 MB/sec
Texel Rate 17600 Mtexels/sec 21376 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 21376 Mpixels/sec
Unified Shaders 96 320(64x5) (x2)
Texture Mapping Units 32 16 (x2)
Render Output Units 8 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the 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 the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GT 340

Amazon.com

Check prices at:

Radeon HD 3850 X2

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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