Radeon HD 6450 (OEM) 1GB vs Radeon R7 260X

Intro

Compare those specs to the Radeon R7 260X, which comes with core speeds of 1100 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 memory. It features 896 SPUs as well as 56 Texture Address Units and 16 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 R7 260X		115 Watts
	Difference: 84 Watts (271%)

Memory Bandwidth

In theory, the Radeon R7 260X should be quite a bit faster than the Radeon HD 6450 (OEM) 1GB overall. (explain)

Radeon R7 260X		104000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 75200 (261%)

Texel Rate

The Radeon R7 260X will be quite a bit (more or less 927%) more effective at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 55600 (927%)

Pixel Rate

The Radeon R7 260X is much (approximately 487%) faster with regards to anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 14600 (487%)

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 largest amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that are applied in one second. This 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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