GeForce GT 340 vs GeForce GTS 450

Intro

Compare those specs to the GeForce GTS 450, which uses a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 RAM runs at a speed of 902 MHz on this specific card. It features 192 SPUs along with 32 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The GeForce GTS 450 should theoretically perform a small bit faster than the GeForce GT 340 in general. (explain)

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

Texel Rate

The GeForce GTS 450 is much (approximately 42%) faster with regards to anisotropic filtering than the GeForce GT 340. (explain)

GeForce GTS 450		25056 Mtexels/sec
GeForce GT 340		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 superior to the GeForce GT 340, by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce GT 340		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

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 processed in one second. This is calculated by multiplying the total texture units by the core 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends 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.