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GeForce GT 340 vs Radeon HD 3850 X2

Intro

The GeForce GT 340 comes with a GPU clock speed of 550 MHz, and the 512 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also is made up of 96 SPUs, 32 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 3850 X2, which uses a 55 nm design. AMD has clocked the core frequency at 668 MHz. The GDDR3 RAM runs at a speed of 828 MHz on this model. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3850 X2 should perform much faster than the GeForce GT 340 overall. (explain)

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

Texel Rate

The Radeon HD 3850 X2 will be a lot (about 21%) faster with regards to 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

The Radeon HD 3850 X2 is much (about 386%) more effective at AA than the GeForce GT 340, and also capable of handling higher resolutions without losing too much performance. (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 largest amount of information (counted in MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

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

Display Prices

Hide Prices

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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