Radeon HD 4670 1GB vs Radeon R9 M290X

Intro

Compare all of that to the Radeon R9 M290X, which comes with GPU core speed of 850 MHz, and 4096 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
Radeon R9 M290X		100 Watts
	Difference: 30 Watts (43%)

Memory Bandwidth

Performance-wise, the Radeon R9 M290X should theoretically be a lot superior to the Radeon HD 4670 1GB in general. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 118400 (336%)

Texel Rate

The Radeon R9 M290X will be quite a bit (approximately 183%) more effective at AF than the Radeon HD 4670 1GB. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 44000 (183%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M290X is superior to the Radeon HD 4670 1GB, and very much so. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 21200 (353%)

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 (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels 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 - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.