HD Graphics 620 vs GeForce GTX 660 OEM

Place in performance ranking	673	805
Place by popularity	not in top-100	50
Cost-effectiveness evaluation	0.10	0.42
Architecture	Kepler (2012−2018)	Gen. 9.5 Kaby Lake (2015−2017)
GPU code name	GK104	Kaby-Lake GT2
Market segment	Desktop	Laptop
Release date	22 August 2012 (11 years ago)	30 August 2016 (7 years ago)
Current price	$481	$353

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

HD Graphics 620 has 320% better value for money than GTX 660 OEM.

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	1152	24
Core clock speed	823 MHz	300 MHz
Boost clock speed	888 MHz	1050 MHz
Number of transistors	3,540 million	189 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	130 Watt	15 Watt
Texture fill rate	85.25	25.20
Floating-point performance	2,046 gflops	403.2 gflops

Form factor & compatibility

Information on GeForce GTX 660 OEM and HD Graphics 620 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.

Interface	PCIe 3.0 x16	PCIe 3.0 x1
Length	241 mm	no data
Width	2-slot	no data
Supplementary power connectors	1x 6-pin	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	GDDR5	DDR3L/LPDDR3/LPDDR4
Maximum RAM amount	2 GB	32 GB
Memory bus width	256 Bit	64/128 Bit
Memory clock speed	5600 MHz	System Shared
Memory bandwidth	179.2 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	2x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	no data

Supported technologies

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

Quick Sync

no data

API compatibility

List of supported graphics 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	2.1
Vulkan	1.1.126	+
CUDA	3.0	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:

Full HD

21−24
+50%

−50%

Pros & cons summary

Performance score	3.69	2.42
Recency	22 August 2012	30 August 2016
Maximum RAM amount	2 GB	32 GB
Chip lithography	28 nm	14 nm
Power consumption (TDP)	130 Watt	15 Watt