GeForce 840M vs Quadro K620

Place in performance ranking	563	758
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.24	0.14
Architecture	Maxwell (2014−2018)	Maxwell (2014−2018)
GPU code name	GM107	N15S-GT
Market segment	Workstation	Laptop
Release date	22 July 2014 (9 years ago)	12 March 2014 (10 years ago)
Launch price (MSRP)	$189.89	no data
Current price	$286 (1.5x MSRP)	$743

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

Quadro K620 has 786% better value for money than GeForce 840M.

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	384
Core clock speed	1058 MHz	1029 MHz
Boost clock speed	1124 MHz	1124 MHz
Number of transistors	1,870 million	no data
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	41 Watt	33 Watt
Texture fill rate	26.98	17.98
Floating-point performance	863.2 gflops	863.2 gflops

Form factor & compatibility

Information on Quadro K620 and GeForce 840M 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	medium sized
Bus support	no data	PCI Express 2.0, PCI Express 3.0
Interface	PCIe 2.0 x16	PCIe 3.0 x8
Length	160 mm	no data
Width	1" (2.5 cm)	no data
Supplementary power connectors	None	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	128 Bit	DDR3
Maximum RAM amount	2 GB	4 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1800 MHz	2000 MHz
Memory bandwidth	Up to 29 GB/s	16.02 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	DVI-I DP	No outputs
Number of simultaneous displays	4	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

GPU Boost	no data	2.0
Optimus	no data	+
GameWorks	no data	+
3D Vision Pro	+	no data
Mosaic	+	no data
nView Desktop Management	+	no data

API compatibility

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

DirectX	12	12 (11_0)
Shader Model	5	5.1
OpenGL	4.5	4.5
OpenCL	1.2	1.2
Vulkan	+	1.1.126
CUDA	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.

Quadro K620 5.77
+105%

GeForce 840M 2.81

Quadro K620 outperforms GeForce 840M by 105% based on our aggregate 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%

Quadro K620 2232
+105%

GeForce 840M 1087

Quadro K620 outperforms GeForce 840M by 105% in Passmark.

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

Benchmark coverage: 9%

Quadro K620 6615
+17%

GeForce 840M 5653

Quadro K620 outperforms GeForce 840M by 17% in GeekBench 5 OpenCL.

GeekBench 5 Vulkan

Benchmark coverage: 5%

Quadro K620 5878
+21.4%

GeForce 840M 4843

Quadro K620 outperforms GeForce 840M by 21% in GeekBench 5 Vulkan.

GeekBench 5 CUDA

Benchmark coverage: 4%

Quadro K620 6653
+19.6%

GeForce 840M 5561

Quadro K620 outperforms GeForce 840M by 20% in GeekBench 5 CUDA.

Octane Render OctaneBench

This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.

Benchmark coverage: 4%

Quadro K620 19
+58.3%

GeForce 840M 12

Quadro K620 outperforms GeForce 840M by 58% in Octane Render OctaneBench.