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Radeon HD 3850 1GB vs Radeon R9 M290X

Intro

The Radeon HD 3850 1GB comes with a core clock speed of 668 MHz and a GDDR3 memory frequency of 828 MHz. It also makes use of a 256-bit memory bus, and uses a 55 nm design. It features 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Compare those specifications to the Radeon R9 M290X, which features core speeds of 850 MHz on the GPU, and 1200 MHz on the 4096 MB of GDDR5 RAM. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 1GB 75 Watts
Radeon R9 M290X 100 Watts
Difference: 25 Watts (33%)

Memory Bandwidth

Performance-wise, the Radeon R9 M290X should theoretically be much better than the Radeon HD 3850 1GB overall. (explain)

Radeon R9 M290X 153600 MB/sec
Radeon HD 3850 1GB 52992 MB/sec
Difference: 100608 (190%)

Texel Rate

The Radeon R9 M290X will be quite a bit (about 536%) better at anisotropic filtering than the Radeon HD 3850 1GB. (explain)

Radeon R9 M290X 68000 Mtexels/sec
Radeon HD 3850 1GB 10688 Mtexels/sec
Difference: 57312 (536%)

Pixel Rate

The Radeon R9 M290X will be quite a bit (approximately 154%) faster with regards to anti-aliasing than the Radeon HD 3850 1GB, and also should be able to handle higher resolutions better. (explain)

Radeon R9 M290X 27200 Mpixels/sec
Radeon HD 3850 1GB 10688 Mpixels/sec
Difference: 16512 (154%)

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

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Radeon HD 3850 1GB

Amazon.com

Check prices at:

Radeon R9 M290X

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

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Model Radeon HD 3850 1GB Radeon R9 M290X
Manufacturer AMD AMD
Year Nov 19, 2007 May 1 2014
Code Name RV670 PRO Neptune XT
Memory 1024 MB 4096 MB
Core Speed 668 MHz 850 MHz
Memory Speed 1656 MHz 4800 MHz
Power (Max TDP) 75 watts 100 watts
Bandwidth 52992 MB/sec 153600 MB/sec
Texel Rate 10688 Mtexels/sec 68000 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 27200 Mpixels/sec
Unified Shaders 320(64x5) 1280
Texture Mapping Units 16 80
Render Output Units 16 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16/AGP 8x PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at handling 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 card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3850 1GB

Amazon.com

Check prices at:

Radeon R9 M290X

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.

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