Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

GeForce 9800 GX2 vs Radeon HD 7870

Intro

The GeForce 9800 GX2 makes use of a 65 nm design. nVidia has set the core speed at 600 MHz. The GDDR3 RAM works at a speed of 1000 MHz on this particular model. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon HD 7870, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this card. It features 1280 SPUs along with 80 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 175 Watts
GeForce 9800 GX2 197 Watts
Difference: 22 Watts (13%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 will be 20% faster than the GeForce 9800 GX2 overall, due to its greater bandwidth. (explain)

Radeon HD 7870 153600 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 25600 (20%)

Texel Rate

The Radeon HD 7870 will be a bit (approximately 4%) faster with regards to texture filtering than the GeForce 9800 GX2. (explain)

Radeon HD 7870 80000 Mtexels/sec
GeForce 9800 GX2 76800 Mtexels/sec
Difference: 3200 (4%)

Pixel Rate

The Radeon HD 7870 should be quite a bit (about 67%) better at FSAA than the GeForce 9800 GX2, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 7870 32000 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 12800 (67%)

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 7870

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 7870
Manufacturer nVidia AMD
Year Mar 2008 March 2012
Code Name G92 Pitcairn XT
Memory 512 MB (x2) 2048 MB
Core Speed 600 MHz (x2) 1000 MHz
Memory Speed 2000 MHz (x2) 4800 MHz
Power (Max TDP) 197 watts 175 watts
Bandwidth 128000 MB/sec 153600 MB/sec
Texel Rate 76800 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 128 (x2) 1280
Texture Mapping Units 64 (x2) 80
Render Output Units 16 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 65 nm 28 nm
Transistors 754 million 2800 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 7870

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