Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce 9800 GX2 vs Radeon HD 6870

Intro

The GeForce 9800 GX2 has a GPU core speed of 600 MHz, and the 512 MB of GDDR3 memory is set to run at 1000 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon HD 6870, which has a clock frequency of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 256-bit memory bus, and uses a 40 nm design. It is made up of 1120 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870 151 Watts
GeForce 9800 GX2 197 Watts
Difference: 46 Watts (30%)

Memory Bandwidth

Theoretically, the Radeon HD 6870 should be a bit faster than the GeForce 9800 GX2 overall. (explain)

Radeon HD 6870 134400 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 6400 (5%)

Texel Rate

The GeForce 9800 GX2 should be much (more or less 52%) better at texture filtering than the Radeon HD 6870. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 26400 (52%)

Pixel Rate

The Radeon HD 6870 should be quite a bit (about 50%) better at FSAA than the GeForce 9800 GX2, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 6870 28800 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 9600 (50%)

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

GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 6870

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 GeForce 9800 GX2 Radeon HD 6870
Manufacturer nVidia AMD
Year Mar 2008 October 2010
Code Name G92 Barts XT
Memory 512 MB (x2) 1024 MB
Core Speed 600 MHz (x2) 900 MHz
Memory Speed 2000 MHz (x2) 4200 MHz
Power (Max TDP) 197 watts 151 watts
Bandwidth 128000 MB/sec 134400 MB/sec
Texel Rate 76800 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 128 (x2) 1120
Texture Mapping Units 64 (x2) 56
Render Output Units 16 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1700 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 6870

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