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Radeon HD 3690/3830 vs Radeon R7 240

Intro

The Radeon HD 3690/3830 has a core clock frequency of 668 MHz and a GDDR3 memory speed of 828 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

Compare that to the Radeon R7 240, which has GPU clock speed of 730 MHz, and 2048 MB of DDR3 RAM set to run at 900 MHz through a 128-bit bus. It also features 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240 30 Watts
Radeon HD 3690/3830 75 Watts
Difference: 45 Watts (150%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 240 should perform a bit faster than the Radeon HD 3690/3830 in general. (explain)

Radeon R7 240 28800 MB/sec
Radeon HD 3690/3830 26496 MB/sec
Difference: 2304 (9%)

Texel Rate

The Radeon R7 240 will be much (about 37%) more effective at AF than the Radeon HD 3690/3830. (explain)

Radeon R7 240 14600 Mtexels/sec
Radeon HD 3690/3830 10688 Mtexels/sec
Difference: 3912 (37%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 3690/3830 is superior to the Radeon R7 240, and very much so. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
Radeon R7 240 5840 Mpixels/sec
Difference: 4848 (83%)

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 3690/3830

Amazon.com

Check prices at:

Radeon R7 240

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 3690/3830 Radeon R7 240
Manufacturer AMD AMD
Year 2008 October 2013
Code Name RV670 PRO Oland PRO
Memory 256 MB 2048 MB
Core Speed 668 MHz 730 MHz
Memory Speed 1656 MHz 1800 MHz
Power (Max TDP) 75 watts 30 watts
Bandwidth 26496 MB/sec 28800 MB/sec
Texel Rate 10688 Mtexels/sec 14600 Mtexels/sec
Pixel Rate 10688 Mpixels/sec 5840 Mpixels/sec
Unified Shaders 320(64x5) 320
Texture Mapping Units 16 20
Render Output Units 16 8
Bus Type GDDR3 DDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million 1040 million
Bus PCIe 2.0 x16 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 largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

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

Display Prices

Hide Prices

Radeon HD 3690/3830

Amazon.com

Check prices at:

Radeon R7 240

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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