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GeForce GT 340 vs Radeon HD 3870 512MB

Intro

The GeForce GT 340 features core 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 those specs to the Radeon HD 3870 512MB, which uses a 55 nm design. AMD has clocked the core speed at 775 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this particular card. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

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

The Radeon HD 3870 512MB should in theory perform a small bit faster than the GeForce GT 340 in general. (explain)

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

Texel Rate

The GeForce GT 340 should be a lot (approximately 42%) more effective at AF 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

The Radeon HD 3870 512MB will be quite a bit (more or less 182%) faster with regards to full screen anti-aliasing than the GeForce GT 340, and also should be able to handle higher resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max 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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