Radeon HD 6850M vs GeForce 840A

Place in performance ranking	728	860
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.13
Architecture	Maxwell (2014−2018)	Terascale 2 (2009−2015)
GPU code name	GM108	Granville Pro/LP
Market segment	Desktop	Laptop
Release date	17 March 2014 (10 years ago)	6 January 2011 (13 years ago)
Current price	no data	$338

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	800
Core clock speed	1029 MHz	575 / 675 MHz
Boost clock speed	1124 MHz	no data
Number of transistors	no data	1,040 million
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	33 Watt	50 Watt
Texture fill rate	17.98	27.00
Floating-point performance	863.2 gflops	1,080.0 gflops

Form factor & compatibility

Information on GeForce 840A and Radeon HD 6850M 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). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop size	no data	large
Interface	PCIe 3.0 x8	PCIe 2.0 x16
Width	IGP	no data

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	DDR3	DDR3, GDDR5
Maximum RAM amount	2 GB	1 GB
Memory bus width	64 Bit	128 Bit
Memory clock speed	2002 MHz	800 MHz
Memory bandwidth	16.02 GB/s	25.6 GB/s
Shared memory	no data	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

No outputs

API compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.6	4.4
OpenCL	1.2	1.2
Vulkan	1.1.126	N/A
CUDA	5.0	no data

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p	30−35 +50%	20 −50%
Full HD	35−40 +45.8%	24 −45.8%

Pros & cons summary

Performance score	3.05	1.95
Recency	17 March 2014	6 January 2011
Maximum RAM amount	2 GB	1 GB
Chip lithography	28 nm	40 nm
Power consumption (TDP)	33 Watt	50 Watt