GeForce 840A vs 830A

Place in performance ranking	742	726
Place by popularity	not in top-100	not in top-100
Architecture	Maxwell (2014−2018)	Maxwell (2014−2018)
GPU code name	GM108	GM108
Market segment	Desktop	Desktop
Release date	22 July 2014 (9 years old)	17 March 2014 (10 years old)

Technical specs

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	256	384
Core clock speed	1082 MHz	1029 MHz
Boost clock speed	1150 MHz	1124 MHz
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	33 Watt	33 Watt
Texture fill rate	18.40	17.98
Floating-point performance	588.8 gflops	863.2 gflops

Size and compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x8	PCIe 3.0 x8
Width	IGP	IGP

Memory

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
Maximum RAM amount	2 GB	2 GB
Memory bus width	64 Bit	64 Bit
Memory clock speed	1800 MHz	2002 MHz
Memory bandwidth	14.4 GB/s	16.02 GB/s

Video outputs and ports

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 support

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

DirectX	12 (11_0)	12 (11_0)
Shader Model	5.1	5.1
OpenGL	4.6	4.6
OpenCL	1.2	1.2
Vulkan	1.1.126	1.1.126
CUDA	5.0	5.0

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GeForce 830A 2.94

GeForce 840A 3.04
+3.4%

840A outperforms 830A by 3% based on our aggregated benchmark results.

Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

GeForce 830A 1138

GeForce 840A 1179
+3.6%

840A outperforms 830A by 4% in Passmark.