Radeon HD 4650 1GB vs Radeon R9 M290X

Intro

Compare all that to the Radeon R9 M290X, which comes with core speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 RAM. It features 1280 SPUs as well as 80 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 1GB		55 Watts
Radeon R9 M290X		100 Watts
	Difference: 45 Watts (82%)

Memory Bandwidth

In theory, the Radeon R9 M290X will be 586% quicker than the Radeon HD 4650 1GB overall, because of its greater bandwidth. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 4650 1GB		22400 MB/sec
	Difference: 131200 (586%)

Texel Rate

The Radeon R9 M290X is quite a bit (approximately 254%) more effective at anisotropic filtering than the Radeon HD 4650 1GB. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 4650 1GB		19200 Mtexels/sec
	Difference: 48800 (254%)

Pixel Rate

The Radeon R9 M290X will be much (more or less 467%) more effective at full screen anti-aliasing than the Radeon HD 4650 1GB, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 4650 1GB		4800 Mpixels/sec
	Difference: 22400 (467%)

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 (measured in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.