Radeon HD 6450 (OEM) 1GB vs Radeon R9 290X

Intro

Compare all that to the Radeon R9 290X, which has GPU clock speed of 800 MHz, and 4096 MB of GDDR5 RAM set to run at 1250 MHz through a 512-bit bus. It also is comprised of 2816 Stream Processors, 176 TAUs, and 64 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 R9 290X		300 Watts
	Difference: 269 Watts (868%)

Memory Bandwidth

As far as performance goes, the Radeon R9 290X should theoretically be quite a bit better than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon R9 290X		320000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 291200 (1011%)

Texel Rate

The Radeon R9 290X is quite a bit (about 2247%) faster with regards to texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 134800 (2247%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 290X is a better choice, by a large margin. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 48200 (1607%)

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 largest amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.