Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

Radeon HD 3850 1GB vs Radeon HD 3850 X2

Intro

The Radeon HD 3850 1GB features core speeds of 668 MHz on the GPU, and 828 MHz on the 1024 MB of GDDR3 RAM. It features 320(64x5) SPUs along with 16 Texture Address Units and 16 ROPs.

Compare all that to the Radeon HD 3850 X2, which has a GPU core clock speed of 668 MHz, and 512 MB of GDDR3 memory set to run at 828 MHz through a 256-bit bus. It also is comprised of 320(64x5) SPUs, 16 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3850 X2 should be a lot faster than the Radeon HD 3850 1GB overall. (explain)

Radeon HD 3850 X2 105984 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 52992 (100%)

Texel Rate

The Radeon HD 3850 X2 is a lot (about 100%) better at anisotropic filtering than the Radeon HD 3850 1GB. (explain)

Radeon HD 3850 X2 21376 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 10688 (100%)

Pixel Rate

The Radeon HD 3850 X2 will be much (more or less 100%) better at full screen anti-aliasing than the Radeon HD 3850 1GB, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
Radeon HD 3850 1GB 10688 Mpixels/sec
Difference: 10688 (100%)

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 3850 1GB

Amazon.com

Check prices at:

Radeon HD 3850 X2

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 3850 1GB Radeon HD 3850 X2
Manufacturer AMD AMD
Year Nov 19, 2007 Apr 4, 2008
Code Name RV670 PRO RV670 PRO
Memory 1024 MB 512 MB (x2)
Core Speed 668 MHz 668 MHz (x2)
Memory Speed 1656 MHz 1656 MHz (x2)
Power (Max TDP) 75 watts (Unknown) watts
Bandwidth 52992 MB/sec 105984 MB/sec
Texel Rate 10688 Mtexels/sec 21376 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 21376 Mpixels/sec
Unified Shaders 320(64x5) 320(64x5) (x2)
Texture Mapping Units 16 16 (x2)
Render Output Units 16 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit (x2)
Fab Process 55 nm 55 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16/AGP 8x PCIe 2.0 x16/(internal PCIe 1.1 x16)
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3850 1GB

Amazon.com

Check prices at:

Radeon HD 3850 X2

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