ATI Radeon HD 3870 X2 vs NVIDIA GeForce 840A
Comparison of Radeon HD 3870 X2 and GeForce 840A architecture, market type and release date.
Radeon HD 3870 X2 and GeForce 840A's general performance parameters such as number of shaders, GPU core clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of Radeon HD 3870 X2 and GeForce 840A's performance, but for precise assessment you have to consider its benchmark and gaming test results.
Core clock speed
Manufacturing process technology
Power consumption (TDP)
Texture fill rate
2x 528.0 gflops
Compatibility, dimensions and requirements
Information on Radeon HD 3870 X2 and GeForce 840A compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin + 1x 8-pin
Parameters of memory installed on Radeon HD 3870 X2 and GeForce 840A: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.
Maximum RAM amount
Memory bus width
Memory clock speed
Video outputs and ports
Types and number of video connectors present on Radeon HD 3870 X2 and GeForce 840A.
2x DVI, 1x S-Video
APIs supported by Radeon HD 3870 X2 and GeForce 840A, sometimes including their particular versions.
Non-gaming benchmarks performance of Radeon HD 3870 X2 and GeForce 840A. Note that overall benchmark performance is measured in points in 0-100 range.
Overall benchmark performance
ATI HD 3870 X2 0.15
GeForce 840A 0.83 +453.3%
ATI HD 3870 X2 708
GeForce 840A 1136 +60.5%
Let's see how good Radeon HD 3870 X2 and GeForce 840A are for gaming. Particular gaming benchmark results are measured in FPS.
Advantages of ATI Radeon HD 3870 X2
Wider memory bus (256 vs 64 bit)
Higher memory bandwidth (57.66 vs 16.02 GB/s)
Advantages of NVIDIA GeForce 840A
453.3% faster (about 5.5 times) in synthetic tests
Much newer (17 March 2014 vs 26 January 2008)
More pipelines (384 vs 320)
Finer manufacturing process technology (28 vs 55 nm)
Less power hungry (33 vs 165 watts)
So, HD 3870 X2 or 840A?
Judging by the results of synthetic and gaming tests, Technical City recommends NVIDIA GeForce 840A.
Should you still have questions on choice between Radeon HD 3870 X2 and GeForce 840A, ask them in Comments section, and we shall answer.