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GeForce GT 340 vs GeForce GTX 285 2GB

Intro

The GeForce GT 340 has a core clock speed of 550 MHz and a GDDR5 memory frequency of 850 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It features 96 SPUs, 32 TAUs, and 8 ROPs.

Compare all that to the GeForce GTX 285 2GB, which comes with GPU core speed of 648 MHz, and 2048 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also is comprised of 240 SPUs, 80 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 69 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 135 Watts (196%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 2GB will be 192% quicker than the GeForce GT 340 in general, due to its higher data rate. (explain)

GeForce GTX 285 2GB 158976 MB/sec
GeForce GT 340 54400 MB/sec
Difference: 104576 (192%)

Texel Rate

The GeForce GTX 285 2GB will be a lot (approximately 195%) faster with regards to texture filtering than the GeForce GT 340. (explain)

GeForce GTX 285 2GB 51840 Mtexels/sec
GeForce GT 340 17600 Mtexels/sec
Difference: 34240 (195%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 285 2GB is a better choice, and very much so. (explain)

GeForce GTX 285 2GB 20736 Mpixels/sec
GeForce GT 340 4400 Mpixels/sec
Difference: 16336 (371%)

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

Amazon.com

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GeForce GTX 285 2GB

Amazon.com

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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 GeForce GTX 285 2GB
Manufacturer nVidia nVidia
Year February 2010 January 15, 2009
Code Name GT215 G200b
Memory 512 MB 2048 MB
Core Speed 550 MHz 648 MHz
Memory Speed 3400 MHz 2484 MHz
Power (Max TDP) 69 watts 204 watts
Bandwidth 54400 MB/sec 158976 MB/sec
Texel Rate 17600 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 96 240
Texture Mapping Units 32 80
Render Output Units 8 32
Bus Type GDDR5 GDDR3
Bus Width 128-bit 512-bit
Fab Process 40 nm 55 nm
Transistors 727 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10.1 DirectX 10
OpenGL Version OpenGL 3.3 OpenGL 3.1

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported over 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 RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GT 340

Amazon.com

Check prices at:

GeForce GTX 285 2GB

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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