Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

Radeon HD 7870 vs Radeon HD 7970

Intro

The Radeon HD 7870 uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this model. It features 1280 SPUs as well as 80 TAUs and 32 ROPs.

Compare those specifications to the Radeon HD 7970, which features a clock speed of 925 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 384-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

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 7970 8225 points
Radeon HD 7870 6230 points
Difference: 1995 (32%)

Ethereum Mining Hash Rate

Radeon HD 7970 21 Mh/s
Radeon HD 7870 16 Mh/s
Difference: 5 (31%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 175 Watts
Radeon HD 7970 250 Watts
Difference: 75 Watts (43%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should perform much faster than the Radeon HD 7870 in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon HD 7870 153600 MB/sec
Difference: 110400 (72%)

Texel Rate

The Radeon HD 7970 is a lot (about 48%) better at texture filtering than the Radeon HD 7870. (explain)

Radeon HD 7970 118400 Mtexels/sec
Radeon HD 7870 80000 Mtexels/sec
Difference: 38400 (48%)

Pixel Rate

The Radeon HD 7870 should be just a bit (approximately 8%) more effective at full screen anti-aliasing than the Radeon HD 7970, and will be capable of handling higher resolutions better. (explain)

Radeon HD 7870 32000 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 2400 (8%)

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

Radeon HD 7870

Radeon HD 7970

Specifications

Display Specifications

Hide Specifications

Model Radeon HD 7870 Radeon HD 7970
Manufacturer AMD AMD
Year March 2012 January 2012
Code Name Pitcairn XT Tahiti XT
Memory 2048 MB 3072 MB
Core Speed 1000 MHz 925 MHz
Memory Speed 4800 MHz 5500 MHz
Power (Max TDP) 175 watts 250 watts
Bandwidth 153600 MB/sec 264000 MB/sec
Texel Rate 80000 Mtexels/sec 118400 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 1280 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit
Fab Process 28 nm 28 nm
Transistors 2800 million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 11.1
OpenGL Version OpenGL 4.2 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Radeon HD 7870

Radeon HD 7970

Comments

3 Responses to “Radeon HD 7870 vs Radeon HD 7970”
andrew says:

people at hardware compare do you mind telling me how the 7970 is better then the 7870 at everything else but the 7870 is better at handling higher resolutions? makes no sense

Richard says:

Has a higher pixel rate

Prized says:

The reason the 7870 only has the advantage of handling higher resolutions easier than the 7970 is probably due to the fact that the video decoder inside the 7970 has been downgraded slightly. I try to run dual monitors and I end up with an increase of 10 degrees on my video card as well as the decoder potentially giving up and starting to display a horribly, HORRIBLY distorted signal.

Whoever thought downgrading the decoder for more performance was a good idea was obviously not quite thinking...however, I still appreciate how powerful this video card is even by today's standards.

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


*

WordPress Anti-Spam by WP-SpamShield


[X]
[X]