GeForce GTS 150 vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which comes with a core clock frequency of 732 MHz and a GDDR5 memory speed of 950 MHz. It also features a 320-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 60 Texture Address Units, and 40 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 150		141 Watts
GeForce GTX 570		219 Watts
	Difference: 78 Watts (55%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 570 is 375% faster than the GeForce GTS 150 overall, due to its greater data rate. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 120000 (375%)

Texel Rate

The GeForce GTS 150 will be a bit (more or less 8%) faster with regards to texture filtering than the GeForce GTX 570. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 3440 (8%)

Pixel Rate

The GeForce GTX 570 is a lot (more or less 147%) faster with regards to FSAA than the GeForce GTS 150, and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 17440 (147%)

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 information (in units of MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core 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 that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few 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.