ATI Radeon HD 3870 vs HD 6620G

Place in the ranking	1120	989
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.04
Power efficiency	1.74	0.94
Architecture	TeraScale 2 (2009−2015)	TeraScale (2005−2013)
GPU code name	Sumo	RV670
Market segment	Desktop	Desktop
Release date	7 December 2011 (12 years ago)	19 November 2007 (16 years ago)
Launch price (MSRP)	no data	$269

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	400	320
Core clock speed	444 MHz	777 MHz
Number of transistors	1,178 million	666 million
Manufacturing process technology	32 nm	55 nm
Power consumption (TDP)	35 Watt	106 Watt
Texture fill rate	8.880	12.43
Floating-point processing power	0.3552 TFLOPS	0.4973 TFLOPS
ROPs	8	16
TMUs	20	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	IGP	PCIe 2.0 x16
Length	no data	241 mm
Width	IGP	2-slot
Supplementary power connectors	no data	1x 6-pin

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	System Shared	GDDR4
Maximum RAM amount	System Shared	512 MB
Memory bus width	System Shared	256 Bit
Memory clock speed	System Shared	1126 MHz
Memory bandwidth	no data	72.06 GB/s
Shared memory	+	-

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

2x DVI, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	11.2 (11_0)	10.1 (10_1)
Shader Model	5.0	4.1
OpenGL	4.4	3.3
OpenCL	1.2	N/A
Vulkan	N/A	N/A

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.

HD 6620G 0.88

ATI HD 3870 1.44
+63.6%

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.

HD 6620G 341

ATI HD 3870 555
+62.8%

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

−61.5%

21−24
+61.5%

Cost per frame, $

1080p

no data

12.81

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

3−4

−33.3%

4−5
+33.3%

Full HD
Medium Preset

Assassin's Creed Odyssey	5−6 −60%	8−9 +60%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 −33.3%	4−5 +33.3%
Far Cry 5	0−1	0−1
Far Cry New Dawn	2−3 −50%	3−4 +50%
Hitman 3	5−6 −60%	8−9 +60%
Horizon Zero Dawn	12−14 −50%	18−20 +50%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 −42.9%	10−11 +42.9%
Watch Dogs: Legion	30−35 −61.3%	50−55 +61.3%

Full HD
High Preset

Assassin's Creed Odyssey	5−6 −60%	8−9 +60%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 −33.3%	4−5 +33.3%
Far Cry 5	0−1	0−1
Far Cry New Dawn	2−3 −50%	3−4 +50%
Hitman 3	5−6 −60%	8−9 +60%
Horizon Zero Dawn	12−14 −50%	18−20 +50%
Red Dead Redemption 2	1−2 +0%	1−2 +0%
Shadow of the Tomb Raider	7−8 −42.9%	10−11 +42.9%
The Witcher 3: Wild Hunt	10−11 −60%	16−18 +60%
Watch Dogs: Legion	30−35 −61.3%	50−55 +61.3%

Full HD
Ultra Preset

Assassin's Creed Odyssey	5−6 −60%	8−9 +60%
Call of Duty: Modern Warfare	3−4 −33.3%	4−5 +33.3%
Cyberpunk 2077	3−4 −33.3%	4−5 +33.3%
Far Cry 5	0−1	0−1
Hitman 3	5−6 −60%	8−9 +60%
Horizon Zero Dawn	12−14 −50%	18−20 +50%
Shadow of the Tomb Raider	7−8 −42.9%	10−11 +42.9%
The Witcher 3: Wild Hunt	10−11 −60%	16−18 +60%
Watch Dogs: Legion	30−35 −61.3%	50−55 +61.3%

Full HD
Epic Preset

Red Dead Redemption 2

1−2

+0%

1−2
+0%

1440p
High Preset

Battlefield 5	0−1	0−1
Far Cry New Dawn	1−2 +0%	1−2 +0%

1440p
Ultra Preset

Assassin's Creed Odyssey	0−1	0−1
Cyberpunk 2077	1−2 +0%	1−2 +0%
Far Cry 5	1−2 +0%	1−2 +0%
Hitman 3	7−8 −42.9%	10−11 +42.9%
Horizon Zero Dawn	4−5 −50%	6−7 +50%
The Witcher 3: Wild Hunt	0−1	0−1
Watch Dogs: Legion	3−4 −33.3%	4−5 +33.3%