Radeon HD 5970 vs Radeon HD 6450 (OEM) 1GB

Intro

Compare that to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory runs at a frequency of 900 MHz on this model. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
Radeon HD 5970		294 Watts
	Difference: 263 Watts (848%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5970 should perform quite a bit faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon HD 5970		256000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 227200 (789%)

Texel Rate

The Radeon HD 5970 should be a lot (about 3767%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon HD 5970		232000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 226000 (3767%)

Pixel Rate

The Radeon HD 5970 should be quite a bit (more or less 2993%) more effective at full screen anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 5970		92800 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 89800 (2993%)

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 MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.