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

Intro

Compare all of that to the GeForce GTS 450 1GB, which has core speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically speaking, the GeForce GT 450 (OEM) should be 66% quicker than the GeForce GTS 450 1GB overall, because of its greater bandwidth. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 38272 (66%)

Texel Rate

The GeForce GTS 450 1GB will be quite a bit (about 32%) more effective at AF than the GeForce GT 450 (OEM). (explain)

GeForce GTS 450 1GB		25056 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 6096 (32%)

Pixel Rate

The GeForce GT 450 (OEM) is much (approximately 51%) more effective at full screen anti-aliasing than the GeForce GTS 450 1GB, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 6432 (51%)

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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 number of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.