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GeForce GT 340 vs Radeon HD 3870 512MB

Intro

The GeForce GT 340 features a GPU core speed of 550 MHz, and the 512 MB of GDDR5 RAM runs at 850 MHz through a 128-bit bus. It also is comprised of 96 Stream Processors, 32 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 3870 512MB, which features a clock speed of 775 MHz and a GDDR3 memory speed of 900 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 16 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 69 Watts
Radeon HD 3870 512MB 106 Watts
Difference: 37 Watts (54%)

Memory Bandwidth

In theory, the Radeon HD 3870 512MB is 6% faster than the GeForce GT 340 overall, because of its greater data rate. (explain)

Radeon HD 3870 512MB 57600 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 3200 (6%)

Texel Rate

The GeForce GT 340 is much (more or less 42%) faster with regards to texture filtering than the Radeon HD 3870 512MB. (explain)

GeForce GT 340 17600 Mtexels/sec
Radeon HD 3870 512MB 12400 Mtexels/sec
Difference: 5200 (42%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3870 512MB is superior to the GeForce GT 340, by far. (explain)

Radeon HD 3870 512MB 12400 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 8000 (182%)

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

Display Prices

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GeForce GT 340

Amazon.com

Check prices at:

Radeon HD 3870 512MB

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 3870 512MB
Manufacturer nVidia AMD
Year February 2010 Nov 19, 2007
Code Name GT215 RV670 XT
Memory 512 MB 512 MB
Core Speed 550 MHz 775 MHz
Memory Speed 3400 MHz 1800 MHz
Power (Max TDP) 69 watts 106 watts
Bandwidth 54400 MB/sec 57600 MB/sec
Texel Rate 17600 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 96 320(64x5)
Texture Mapping Units 32 16
Render Output Units 8 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 727 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.3 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 340

Amazon.com

Check prices at:

Radeon HD 3870 512MB

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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