Radeon HD 6450 (OEM) 1GB vs Radeon R9 270

Intro

Compare that to the Radeon R9 270, which features core speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
Radeon R9 270		150 Watts
	Difference: 119 Watts (384%)

Memory Bandwidth

As far as performance goes, the Radeon R9 270 should theoretically be much superior to the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 150400 (522%)

Texel Rate

The Radeon R9 270 is quite a bit (more or less 1100%) more effective at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 66000 (1100%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 270 is superior to the Radeon HD 6450 (OEM) 1GB, and very much so. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 25800 (860%)

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: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.