GeForce GTS 150 vs GeForce GTS 450 1GB

Intro

Compare those specs to the GeForce GTS 450 1GB, which makes use of a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 memory works at a frequency of 902 MHz on this particular model. It features 192 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce GTS 150		141 Watts
	Difference: 35 Watts (33%)

Memory Bandwidth

Performance-wise, the GeForce GTS 450 1GB should in theory be much better than the GeForce GTS 150 overall. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 25728 (80%)

Texel Rate

The GeForce GTS 150 is quite a bit (about 89%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 22304 (89%)

Pixel Rate

The GeForce GTS 450 1GB will be a small bit (approximately 6%) faster with regards to AA than the GeForce GTS 150, and also will be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 688 (6%)

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 max amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.