Join Us On Facebook

Compare any two graphics cards:
VS

Radeon HD 7950 vs Radeon HD 7970

Intro

The Radeon HD 7950 has a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 384-bit bus, and uses a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 7970, which has core speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 200 Watts
Radeon HD 7970 250 Watts
Difference: 50 Watts (25%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 should be 10% faster than the Radeon HD 7950 in general, due to its higher bandwidth. (explain)

Radeon HD 7970 264000 MB/sec
Radeon HD 7950 240000 MB/sec
Difference: 24000 (10%)

Texel Rate

The Radeon HD 7970 will be a lot (approximately 32%) more effective at anisotropic filtering than the Radeon HD 7950. (explain)

Radeon HD 7970 118400 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 28800 (32%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7970 is the winner, though only just barely. (explain)

Radeon HD 7970 29600 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 4000 (16%)

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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

Radeon HD 7950

Amazon.com

Other US-based stores

Radeon HD 7970

Amazon.com

Other US-based stores

Specifications

Model Radeon HD 7950 Radeon HD 7970
Manufacturer ATi ATi
Year January 2012 January 2012
Code Name Tahiti Pro Tahiti XT
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 1536 MB 3072 MB
Core Speed 800 MHz 925 MHz
Shader Speed N/A MHz (N/A) MHz
Memory Speed 1250 MHz (5000 MHz effective) 1375 MHz (5500 MHz effective)
Unified Shaders 1792 2048
Texture Mapping Units 112 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 384-bit
DirectX Version DirectX 11.1 DirectX 11.1
OpenGL Version OpenGL 4.2 OpenGL 4.2
Power (Max TDP) 200 watts 250 watts
Shader Model 5.0 5.0
Bandwidth 240000 MB/sec 264000 MB/sec
Texel Rate 89600 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 29600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

6 Responses to “Radeon HD 7950 vs Radeon HD 7970”
Xnerdz says:
I thought that the HD 7950 had 3GB of memory...
exodus says:
it does..... silllyyyyy
Anon says:
There is a 3GB version of the 7950. It's a separate item on the lists displayed on this site.

Go to the top of the page, click the dropdown lists, select the 3GB version. Now that wasn't hard, was it?

Xnerdz says:
Yeah, I didn't saw it the first time... sorry, my bad.
massive says:
cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt cunt
orly says:
badger badger badger badger badger badger badger badger badger badger badger badger mushroom mushroom!
badger badger badger badger badger badger badger badger badger badger badger badger mushroom mushroom!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Spam Protection by WP-SpamFree