GeForce GTS 450 1GB vs GeForce GTX 650 Ti

Intro

Compare all that to the GeForce GTX 650 Ti, which features clock speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 RAM. It features 768 SPUs along with 64 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 4 Watts (4%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 Ti should theoretically be much superior to the GeForce GTS 450 1GB overall. (explain)

GeForce GTX 650 Ti		86400 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 28672 (50%)

Texel Rate

The GeForce GTX 650 Ti should be a lot (more or less 137%) faster with regards to AF than the GeForce GTS 450 1GB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 34336 (137%)

Pixel Rate

The GeForce GTX 650 Ti will be a bit (approximately 19%) better at AA than the GeForce GTS 450 1GB, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 2320 (19%)

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 largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.