Radeon RX 6600 vs HD 6850 X2

Place in performance ranking	538	102
Place by popularity	not in top-100	14
Cost-effectiveness evaluation	no data	34.96
Architecture	TeraScale 2 (2009−2015)	Navi / RDNA2 (2020−2022)
GPU code name	Barts	Navi 23
Market segment	Desktop	Desktop
Release date	19 September 2011 (12 years ago)	13 October 2021 (2 years ago)
Launch price (MSRP)	no data	$329
Current price	no data	$358 (1.1x MSRP)

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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	960	1792
Core clock speed	800 MHz	2044 MHz
Boost clock speed	no data	2491 MHz
Number of transistors	1,700 million	11,060 million
Manufacturing process technology	40 nm	7 nm
Power consumption (TDP)	254 Watt	132 Watt
Texture fill rate	38.40	279.0
Floating-point performance	2x 1,536.0 gflops	no data

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 2.0 x16	PCIe 4.0 x8
Length	no data	190 mm
Width	2-slot	2-slot
Supplementary power connectors	2x 8-pin	1x 8-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	GDDR5	GDDR6
Maximum RAM amount	2 GB	8 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	4200 MHz	14500 MHz
Memory bandwidth	134.4 GB/s	224.0 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	2x DVI, 1x HDMI, 1x DisplayPort	1x HDMI, 3x DisplayPort
HDMI	+	+

API compatibility

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

DirectX	11.2 (11_0)	12.0 Ultimate (12_2)
Shader Model	5.0	6.5
OpenGL	4.4	4.6
OpenCL	1.2	2.1
Vulkan	N/A	1.2

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.

HD 6850 X2 6.56

RX 6600 39.19
+497%

RX 6600 outperforms HD 6850 X2 by 497% 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%

HD 6850 X2 2534

RX 6600 15134
+497%

RX 6600 outperforms HD 6850 X2 by 497% in Passmark.

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	18−20 −506%	109 +506%
1440p	9−10 −533%	57 +533%
4K	5−6 −520%	31 +520%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

16−18
−569%

107

+569%

Full HD
Medium Preset

Assassin's Creed Odyssey	10−11 −590%	65−70 +590%
Assassin's Creed Valhalla	18−20 −528%	113 +528%
Battlefield 5	21−24 −500%	120−130 +500%
Call of Duty: Modern Warfare	12−14 −558%	75−80 +558%
Cyberpunk 2077	14−16 −550%	91 +550%
Far Cry 5	14−16 −507%	85−90 +507%
Far Cry New Dawn	16−18 −506%	95−100 +506%
Forza Horizon 4	24−27 −521%	140−150 +521%
Hitman 3	16−18 −519%	99 +519%
Horizon Zero Dawn	40−45 −565%	266 +565%
Metro Exodus	18−20 −522%	110−120 +522%
Red Dead Redemption 2	14−16 −571%	90−95 +571%
Shadow of the Tomb Raider	35−40 −543%	225 +543%
Watch Dogs: Legion	16−18 −556%	105 +556%

Full HD
High Preset

Assassin's Creed Odyssey	10−11 −590%	65−70 +590%
Assassin's Creed Valhalla	14−16 −557%	92 +557%
Battlefield 5	21−24 −500%	120−130 +500%
Call of Duty: Modern Warfare	12−14 −558%	75−80 +558%
Cyberpunk 2077	12−14 −508%	73 +508%
Far Cry 5	14−16 −507%	85−90 +507%
Far Cry New Dawn	16−18 −506%	95−100 +506%
Forza Horizon 4	24−27 −521%	140−150 +521%
Hitman 3	14−16 −571%	94 +571%
Horizon Zero Dawn	24−27 −563%	150−160 +563%
Metro Exodus	10−11 −570%	67 +570%
Red Dead Redemption 2	14−16 −571%	90−95 +571%
Shadow of the Tomb Raider	30−33 −507%	182 +507%
The Witcher 3: Wild Hunt	24−27 −513%	147 +513%
Watch Dogs: Legion	16−18 −506%	95−100 +506%

Full HD
Ultra Preset

Assassin's Creed Odyssey	10−11 −590%	65−70 +590%
Assassin's Creed Valhalla	12−14 −550%	78 +550%
Call of Duty: Modern Warfare	12−14 −558%	75−80 +558%
Cyberpunk 2077	9−10 −556%	59 +556%
Far Cry 5	14−16 −507%	85−90 +507%
Forza Horizon 4	24−27 −521%	140−150 +521%
Horizon Zero Dawn	21−24 −576%	142 +576%
Shadow of the Tomb Raider	24−27 −554%	157 +554%
The Witcher 3: Wild Hunt	14−16 −543%	90 +543%
Watch Dogs: Legion	9−10 −544%	58 +544%

Full HD
Epic Preset

Red Dead Redemption 2

14−16

−571%

90−95
+571%

1440p
High Preset

Battlefield 5	12−14 −525%	75−80 +525%
Far Cry New Dawn	14−16 −550%	90−95 +550%

1440p
Ultra Preset

Assassin's Creed Odyssey	7−8 −500%	40−45 +500%
Assassin's Creed Valhalla	8−9 −550%	52 +550%
Call of Duty: Modern Warfare	10−11 −500%	60−65 +500%
Cyberpunk 2077	5−6 −580%	34 +580%
Far Cry 5	14−16 −550%	91 +550%
Forza Horizon 4	12−14 −583%	80−85 +583%
Hitman 3	9−10 −500%	54 +500%
Horizon Zero Dawn	16−18 −538%	102 +538%
Metro Exodus	16−18 −506%	97 +506%
Shadow of the Tomb Raider	16−18 −531%	101 +531%
The Witcher 3: Wild Hunt	9−10 −533%	55−60 +533%
Watch Dogs: Legion	6−7 −583%	41 +583%

1440p
Epic Preset

Red Dead Redemption 2

10−11

−570%

65−70
+570%

4K
High Preset

Battlefield 5	6−7 −550%	35−40 +550%
Far Cry New Dawn	5−6 −560%	30−35 +560%
Hitman 3	6−7 −500%	36 +500%
Horizon Zero Dawn	8−9 −525%	50−55 +525%
Shadow of the Tomb Raider	5−6 −560%	33 +560%
The Witcher 3: Wild Hunt	7−8 −529%	44 +529%

4K
Ultra Preset

Assassin's Creed Odyssey	4−5 −575%	27−30 +575%
Assassin's Creed Valhalla	4−5 −500%	24 +500%
Call of Duty: Modern Warfare	4−5 −525%	24−27 +525%
Cyberpunk 2077	2−3 −600%	14 +600%
Far Cry 5	3−4 −667%	21−24 +667%
Forza Horizon 4	9−10 −500%	50−55 +500%
Horizon Zero Dawn	9−10 −511%	55 +511%
Metro Exodus	8−9 −500%	48 +500%
Watch Dogs: Legion	3−4 −600%	21 +600%

4K
Epic Preset

Red Dead Redemption 2

5−6
−600%

35−40

+600%

This is how HD 6850 X2 and RX 6600 compete in popular games:

RX 6600 is 506% faster in 1080p
RX 6600 is 533% faster in 1440p
RX 6600 is 520% faster in 4K

Pros & cons summary

Performance score	6.56	39.19
Recency	19 September 2011	13 October 2021
Maximum RAM amount	2 GB	8 GB
Chip lithography	40 nm	7 nm
Power consumption (TDP)	254 Watt	132 Watt