Radeon HD 4670 1GB vs Radeon R9 280X

Intro

Compare those specs to the Radeon R9 280X, which has GPU core speed of 850 MHz, and 3072 MB of GDDR5 RAM set to run at 1500 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
Radeon R9 280X		250 Watts
	Difference: 180 Watts (257%)

Memory Bandwidth

Theoretically, the Radeon R9 280X should perform quite a bit faster than the Radeon HD 4670 1GB overall. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 252800 (718%)

Texel Rate

The Radeon R9 280X should be much (more or less 353%) more effective at AF than the Radeon HD 4670 1GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 84800 (353%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 280X is a better choice, by far. (explain)

Radeon R9 280X		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 information (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.