Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

Radeon HD 6990 vs Radeon HD 7850

Intro

The Radeon HD 6990 has a GPU clock speed of 830 MHz, and the 2048 MB of GDDR5 RAM runs at 1250 MHz through a 256-bit bus. It also features 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 7850, which features a clock frequency of 860 MHz and a GDDR5 memory speed of 1200 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is made up of 1024 SPUs, 64 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 HD 6990 5820 points
Radeon HD 7850 5200 points
Difference: 620 (12%)

Ethereum Mining Hash Rate

Radeon HD 6990 24 Mh/s
Radeon HD 7850 13 Mh/s
Difference: 11 (85%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7850 130 Watts
Radeon HD 6990 375 Watts
Difference: 245 Watts (188%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6990 should theoretically be quite a bit better than the Radeon HD 7850 in general. (explain)

Radeon HD 6990 320000 MB/sec
Radeon HD 7850 153600 MB/sec
Difference: 166400 (108%)

Texel Rate

The Radeon HD 6990 will be much (approximately 190%) better at anisotropic filtering than the Radeon HD 7850. (explain)

Radeon HD 6990 159360 Mtexels/sec
Radeon HD 7850 55040 Mtexels/sec
Difference: 104320 (190%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6990 is a better choice, and very much so. (explain)

Radeon HD 6990 53120 Mpixels/sec
Radeon HD 7850 27520 Mpixels/sec
Difference: 25600 (93%)

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 6990

Amazon.com

Check prices at:

Radeon HD 7850

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 6990 Radeon HD 7850
Manufacturer AMD AMD
Year March 2011 March 2012
Code Name Antilles Pitcairn Pro
Memory 2048 MB (x2) 2048 MB
Core Speed 830 MHz (x2) 860 MHz
Memory Speed 5000 MHz (x2) 4800 MHz
Power (Max TDP) 375 watts 130 watts
Bandwidth 320000 MB/sec 153600 MB/sec
Texel Rate 159360 Mtexels/sec 55040 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 27520 Mpixels/sec
Unified Shaders 1536 (x2) 1024
Texture Mapping Units 96 (x2) 64
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 40 nm 28 nm
Transistors 2640 million 2800 million
Bus PCIe 2.1 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 6990

Amazon.com

Check prices at:

Radeon HD 7850

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