Radeon R5 M330 vs Radeon R9 M290X

Intro

Compare those specifications to the Radeon R9 M290X, which features a core clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M290X should theoretically be quite a bit faster than the Radeon R5 M330 overall. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon R5 M330		14400 MB/sec
	Difference: 139200 (967%)

Texel Rate

The Radeon R9 M290X should be quite a bit (approximately 230%) faster with regards to anisotropic filtering than the Radeon R5 M330. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon R5 M330		20600 Mtexels/sec
	Difference: 47400 (230%)

Pixel Rate

The Radeon R9 M290X is a lot (about 230%) more effective at anti-aliasing than the Radeon R5 M330, and should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon R5 M330		8240 Mpixels/sec
	Difference: 18960 (230%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.