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GeForce GT 340 1GB vs GeForce GTS 450 1GB

Intro

The GeForce GT 340 1GB features clock speeds of 550 MHz on the GPU, and 850 MHz on the 1024 MB of GDDR5 RAM. It features 96 SPUs along with 32 TAUs and 8 Rasterization Operator Units.

Compare all that to the GeForce GTS 450 1GB, which features a clock speed of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB 69 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 37 Watts (54%)

Memory Bandwidth

In theory, the GeForce GTS 450 1GB is 6% quicker than the GeForce GT 340 1GB in general, due to its higher data rate. (explain)

GeForce GTS 450 1GB 57728 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 3328 (6%)

Texel Rate

The GeForce GTS 450 1GB will be quite a bit (approximately 42%) better at texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 7456 (42%)

Pixel Rate

The GeForce GTS 450 1GB should be quite a bit (more or less 185%) faster with regards to full screen anti-aliasing than the GeForce GT 340 1GB, and should be able to handle higher screen resolutions better. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 8128 (185%)

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 1GB

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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 1GB GeForce GTS 450 1GB
Manufacturer nVidia nVidia
Year February 2010 September 2010
Code Name GT215 GF106
Memory 1024 MB 1024 MB
Core Speed 550 MHz 783 MHz
Memory Speed 3400 MHz 3608 MHz
Power (Max TDP) 69 watts 106 watts
Bandwidth 54400 MB/sec 57728 MB/sec
Texel Rate 17600 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 96 192
Texture Mapping Units 32 32
Render Output Units 8 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 1170 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported 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 RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 340 1GB

Amazon.com

Check prices at:

GeForce GTS 450 1GB

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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