Compare any two graphics cards:
VS

Radeon HD 4870 X2 vs Radeon R9 M270X

Intro

The Radeon HD 4870 X2 has a clock frequency of 750 MHz and a GDDR5 memory speed of 900 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Compare those specifications to the Radeon R9 M270X, which comes with a GPU core clock speed of 725 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 will be 220% quicker than the Radeon R9 M270X in general, because of its greater bandwidth. (explain)

Radeon HD 4870 X2 230400 MB/sec
Radeon R9 M270X 72000 MB/sec
Difference: 158400 (220%)

Texel Rate

The Radeon HD 4870 X2 is quite a bit (approximately 107%) faster with regards to anisotropic filtering than the Radeon R9 M270X. (explain)

Radeon HD 4870 X2 60000 Mtexels/sec
Radeon R9 M270X 29000 Mtexels/sec
Difference: 31000 (107%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4870 X2 is superior to the Radeon R9 M270X, and very much so. (explain)

Radeon HD 4870 X2 24000 Mpixels/sec
Radeon R9 M270X 11600 Mpixels/sec
Difference: 12400 (107%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Display Prices

Hide Prices

Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon R9 M270X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Display Specifications

Hide Specifications

Model Radeon HD 4870 X2 Radeon R9 M270X
Manufacturer AMD AMD
Year Aug 12, 2008 May 1 2014
Code Name R700 Venus XT
Memory 1024 MB (x2) 2048 MB
Core Speed 750 MHz (x2) 725 MHz
Memory Speed 3600 MHz (x2) 4500 MHz
Power (Max TDP) 350 watts (Unknown) watts
Bandwidth 230400 MB/sec 72000 MB/sec
Texel Rate 60000 Mtexels/sec 29000 Mtexels/sec
Pixel Rate 24000 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 800(160x5) (x2) 640
Texture Mapping Units 40 (x2) 40
Render Output Units 16 (x2) 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 28 nm
Transistors 956 million (Unknown) million
Bus PCIe 2.0 x16 (PCIe bridge) PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 processed in one second. This number is worked out by multiplying the total amount of 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends 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.

Display Prices

Hide Prices

Radeon HD 4870 X2

Amazon.com

Check prices at:

Radeon R9 M270X

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield