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

Intro

Compare all of that to the Radeon R7 260X, which features GPU core speed of 1100 MHz, and 2048 MB of GDDR5 memory set to run at 1625 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation 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

Theoretically speaking, the Radeon R7 260X will be 261% quicker than the Radeon HD 6450 (OEM) 1GB overall, due to its greater bandwidth. (explain)

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

Texel Rate

The Radeon R7 260X is quite a bit (approximately 927%) better at AF 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

If running with a high resolution is important to you, then the Radeon R7 260X is superior to the Radeon HD 6450 (OEM) 1GB, by a large margin. (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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, 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 maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to get to the maximum fill rate.