UHD Graphics vs GeForce 840A

Place in the ranking	777	601
Place by popularity	not in top-100	7
Power efficiency	6.26	38.79
Architecture	Maxwell (2014−2017)	Generation 11.0 (2019−2021)
GPU code name	GM108	Jasper Lake GT1
Market segment	Laptop	Laptop
Release date	17 March 2014 (10 years ago)	11 January 2021 (3 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	256
Core clock speed	1029 MHz	350 MHz
Boost clock speed	1124 MHz	750 MHz
Manufacturing process technology	28 nm	10 nm+
Power consumption (TDP)	33 Watt	10 Watt
Texture fill rate	17.98	12.00
Floating-point processing power	0.8632 TFLOPS	0.384 TFLOPS
ROPs	8	8
TMUs	16	16

Form factor & 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

Ring Bus

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	System Shared
Maximum RAM amount	2 GB	System Shared
Memory bus width	64 Bit	System Shared
Memory clock speed	1001 MHz	System Shared
Memory bandwidth	16.02 GB/s	no data
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 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (11_0)	12 (12_1)
Shader Model	5.1	6.4
OpenGL	4.6	4.6
OpenCL	1.2	3.0
Vulkan	1.1.126	1.2
CUDA	5.0	-

Synthetic benchmark performance

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

Combined synthetic benchmark score

This is our combined benchmark 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 840A 2.97

UHD Graphics 5.58
+87.9%

Passmark

This is the most ubiquitous GPU benchmark. 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.

GeForce 840A 1145

UHD Graphics 2151
+87.9%

Gaming performance

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

Pros & cons summary

Performance score	2.97	5.58
Recency	17 March 2014	11 January 2021
Chip lithography	28 nm	10 nm
Power consumption (TDP)	33 Watt	10 Watt

UHD Graphics has a 87.9% higher aggregate performance score, an age advantage of 6 years, a 180% more advanced lithography process, and 230% lower power consumption.

The UHD Graphics is our recommended choice as it beats the GeForce 840A in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.