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GeForce GT 340 1GB vs GeForce GT 450 (OEM)

Intro

The GeForce GT 340 1GB makes use of a 40 nm design. nVidia has set the core speed at 550 MHz. The GDDR5 memory runs at a speed of 850 MHz on this specific model. It features 96 SPUs along with 32 TAUs and 8 ROPs.

Compare those specs to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has clocked the core speed at 790 MHz. The GDDR5 memory is set to run at a speed of 1000 MHz on this specific card. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should perform quite a bit faster than the GeForce GT 340 1GB overall. (explain)

GeForce GT 450 (OEM) 96000 MB/sec
GeForce GT 340 1GB 54400 MB/sec
Difference: 41600 (76%)

Texel Rate

The GeForce GT 450 (OEM) should be a small bit (approximately 8%) more effective at AF than the GeForce GT 340 1GB. (explain)

GeForce GT 450 (OEM) 18960 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 1360 (8%)

Pixel Rate

The GeForce GT 450 (OEM) will be much (approximately 331%) faster with regards to anti-aliasing than the GeForce GT 340 1GB, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 450 (OEM) 18960 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 14560 (331%)

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 GT 450 (OEM)

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 GT 450 (OEM)
Manufacturer nVidia nVidia
Year February 2010 October 2010
Code Name GT215 GF106
Memory 1024 MB 1536 MB
Core Speed 550 MHz 790 MHz
Memory Speed 3400 MHz 4000 MHz
Power (Max TDP) 69 watts 106 watts
Bandwidth 54400 MB/sec 96000 MB/sec
Texel Rate 17600 Mtexels/sec 18960 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 18960 Mpixels/sec
Unified Shaders 96 144
Texture Mapping Units 32 24
Render Output Units 8 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-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: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour 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 lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GT 340 1GB

Amazon.com

Check prices at:

GeForce GT 450 (OEM)

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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