GeForce GTX 590 vs Radeon HD 5450

Intro

Compare all of that to the Radeon HD 5450, which features GPU core speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) Stream Processors, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 590		365 Watts
	Difference: 346 Watts (1821%)

Memory Bandwidth

The GeForce GTX 590 should theoretically be much faster than the Radeon HD 5450 overall. (explain)

GeForce GTX 590		328320 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 315520 (2465%)

Texel Rate

The GeForce GTX 590 should be quite a bit (about 1394%) more effective at texture filtering than the Radeon HD 5450. (explain)

GeForce GTX 590		77696 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 72496 (1394%)

Pixel Rate

The GeForce GTX 590 should be much (about 2141%) more effective at FSAA than the Radeon HD 5450, and able to handle higher resolutions better. (explain)

GeForce GTX 590		58272 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 55672 (2141%)

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: Bandwidth is the maximum amount of data (in units of megabytes 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 speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. 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 many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.