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GeForce GT 340 1GB vs GeForce GTS 450

Intro

The GeForce GT 340 1GB has a GPU core speed of 550 MHz, and the 1024 MB of GDDR5 memory is set to run at 850 MHz through a 128-bit bus. It also is made up of 96 Stream Processors, 32 TAUs, and 8 Raster Operation Units.

Compare those specifications to the GeForce GTS 450, which comes with core clock speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs as well as 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically, the GeForce GTS 450 should perform a bit faster than the GeForce GT 340 1GB overall. (explain)

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

Texel Rate

The GeForce GTS 450 should be much (approximately 42%) more effective at texture filtering than the GeForce GT 340 1GB. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 450 is a better choice, by a large margin. (explain)

GeForce GTS 450 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

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
Manufacturer nVidia nVidia
Year February 2010 September 2010
Code Name GT215 GF106
Memory 1024 MB 512 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 maximum amount of information (counted in MB per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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

Display Prices

Hide Prices

GeForce GT 340 1GB

Amazon.com

Check prices at:

GeForce GTS 450

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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