GeForce GTS 150 vs Radeon HD 5570

Intro

Compare those specifications to the Radeon HD 5570, which makes use of a 40 nm design. AMD has set the core speed at 650 MHz. The DDR3 RAM works at a frequency of 900 MHz on this particular card. It features 400(80x5) SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTS 150		141 Watts
	Difference: 98 Watts (228%)

Memory Bandwidth

Theoretically, the GeForce GTS 150 should be a small bit faster than the Radeon HD 5570 overall. (explain)

GeForce GTS 150		32000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The GeForce GTS 150 should be quite a bit (more or less 264%) more effective at AF than the Radeon HD 5570. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 34360 (264%)

Pixel Rate

The GeForce GTS 150 is a lot (about 128%) faster with regards to anti-aliasing than the Radeon HD 5570, and also able to handle higher resolutions more effectively. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 6640 (128%)

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 max amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.