GeForce GTS 450 1GB vs Geforce GTX 690

Intro

Compare those specs to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory runs at a frequency of 1502 MHz on this card. It features 1536 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
Geforce GTX 690		300 Watts
	Difference: 194 Watts (183%)

Memory Bandwidth

In theory, the Geforce GTX 690 should be a lot faster than the GeForce GTS 450 1GB overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 326784 (566%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 835%) more effective at AF than the GeForce GTS 450 1GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 209184 (835%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 690 is superior to the GeForce GTS 450 1GB, and very much so. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 46032 (367%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the 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 graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the card's clock speed. 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.