Radeon HD 6450 (OEM) vs Radeon R9 270

Intro

Compare those specs to the Radeon R9 270, which features a clock speed of 900 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is made up of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270		5943 points
Radeon HD 6450 (OEM)		340 points
	Difference: 5603 (1648%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 270		150 Watts
	Difference: 119 Watts (384%)

Memory Bandwidth

Theoretically, the Radeon R9 270 should be quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 166400 (1300%)

Texel Rate

The Radeon R9 270 is much (approximately 1340%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 67000 (1340%)

Pixel Rate

The Radeon R9 270 is quite a bit (approximately 1052%) faster with regards to AA than the Radeon HD 6450 (OEM), and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 26300 (1052%)

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 (counted 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 the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.