Radeon RX 6900 vs HD 6990M

Place in the ranking	617	21
Place by popularity	not in top-100	not in top-100
Power efficiency	3.59	18.67
Architecture	TeraScale 2 (2009−2015)	RDNA 2.0 (2020−2024)
GPU code name	Blackcomb	Navi 21
Market segment	Laptop	Desktop
Release date	12 July 2011 (13 years ago)	28 October 2020 (4 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	1120	4608
Core clock speed	715 MHz	no data
Boost clock speed	no data	2105 MHz
Number of transistors	1,700 million	23,000 million
Manufacturing process technology	40 nm	7 nm
Power consumption (TDP)	100 Watt	255 Watt
Texture fill rate	40.04	606.2
Floating-point processing power	1.602 TFLOPS	19.4 TFLOPS
ROPs	32	64
TMUs	56	288

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).

Laptop size	large	no data
Interface	MXM-B (3.0)	PCIe 4.0 x16
Width	no data	2-slot
Supplementary power connectors	None	2x 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	16 GB
Memory bus width	256 Bit	256 Bit
Memory clock speed	900 MHz	16 GB/s
Memory bandwidth	115.2 GB/s	512.0 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	1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI	-	+

API compatibility

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

DirectX	11.2 (11_0)	12 Ultimate (12_2)
Shader Model	5.0	6.5
OpenGL	4.4	4.6
OpenCL	1.2	2.0
Vulkan	N/A	1.2

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:

900p	54 −1196%	700−750 +1196%
Full HD	59 −1171%	750−800 +1171%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

9−10
−1122%

110−120

+1122%

Full HD
Medium Preset

Assassin's Creed Odyssey	14−16 −1186%	180−190 +1186%
Assassin's Creed Valhalla	6−7 −1150%	75−80 +1150%
Battlefield 5	14−16 −1186%	180−190 +1186%
Call of Duty: Modern Warfare	10−12 −1173%	140−150 +1173%
Cyberpunk 2077	9−10 −1122%	110−120 +1122%
Far Cry 5	10−12 −1173%	140−150 +1173%
Far Cry New Dawn	14−16 −1167%	190−200 +1167%
Forza Horizon 4	30−35 −1112%	400−450 +1112%
Hitman 3	10−12 −1173%	140−150 +1173%
Horizon Zero Dawn	30−35 −1112%	400−450 +1112%
Metro Exodus	12−14 −1208%	170−180 +1208%
Red Dead Redemption 2	14−16 −1186%	180−190 +1186%
Shadow of the Tomb Raider	18−20 −1216%	250−260 +1216%
Watch Dogs: Legion	45−50 −1177%	600−650 +1177%

Full HD
High Preset

Assassin's Creed Odyssey	14−16 −1186%	180−190 +1186%
Assassin's Creed Valhalla	6−7 −1150%	75−80 +1150%
Battlefield 5	14−16 −1186%	180−190 +1186%
Call of Duty: Modern Warfare	10−12 −1173%	140−150 +1173%
Cyberpunk 2077	9−10 −1122%	110−120 +1122%
Far Cry 5	10−12 −1173%	140−150 +1173%
Far Cry New Dawn	14−16 −1167%	190−200 +1167%
Forza Horizon 4	30−35 −1112%	400−450 +1112%
Hitman 3	10−12 −1173%	140−150 +1173%
Horizon Zero Dawn	30−35 −1112%	400−450 +1112%
Metro Exodus	12−14 −1208%	170−180 +1208%
Red Dead Redemption 2	14−16 −1186%	180−190 +1186%
Shadow of the Tomb Raider	18−20 −1216%	250−260 +1216%
The Witcher 3: Wild Hunt	18−20 −1178%	230−240 +1178%
Watch Dogs: Legion	45−50 −1177%	600−650 +1177%

Full HD
Ultra Preset

Assassin's Creed Odyssey	14−16 −1186%	180−190 +1186%
Assassin's Creed Valhalla	6−7 −1150%	75−80 +1150%
Call of Duty: Modern Warfare	10−12 −1173%	140−150 +1173%
Cyberpunk 2077	9−10 −1122%	110−120 +1122%
Far Cry 5	10−12 −1173%	140−150 +1173%
Forza Horizon 4	30−35 −1112%	400−450 +1112%
Hitman 3	10−12 −1173%	140−150 +1173%
Horizon Zero Dawn	30−35 −1112%	400−450 +1112%
Shadow of the Tomb Raider	18−20 −1216%	250−260 +1216%
The Witcher 3: Wild Hunt	18−20 −1178%	230−240 +1178%
Watch Dogs: Legion	45−50 −1177%	600−650 +1177%

Full HD
Epic Preset

Red Dead Redemption 2

14−16

−1186%

180−190
+1186%

1440p
High Preset

Battlefield 5	10−11 −1200%	130−140 +1200%
Far Cry New Dawn	8−9 −1150%	100−105 +1150%

1440p
Ultra Preset

Assassin's Creed Odyssey	5−6 −1200%	65−70 +1200%
Assassin's Creed Valhalla	0−1	0−1
Call of Duty: Modern Warfare	5−6 −1200%	65−70 +1200%
Cyberpunk 2077	2−3 −1100%	24−27 +1100%
Far Cry 5	6−7 −1150%	75−80 +1150%
Forza Horizon 4	12−14 −1208%	170−180 +1208%
Hitman 3	9−10 −1122%	110−120 +1122%
Horizon Zero Dawn	12−14 −1150%	150−160 +1150%
Metro Exodus	3−4 −1067%	35−40 +1067%
The Witcher 3: Wild Hunt	4−5 −1150%	50−55 +1150%
Watch Dogs: Legion	30−35 −1112%	400−450 +1112%

1440p
Epic Preset

Red Dead Redemption 2

9−10
−1122%

110−120

+1122%

4K
High Preset

Battlefield 5	4−5 −1150%	50−55 +1150%
Far Cry New Dawn	3−4 −1067%	35−40 +1067%
Hitman 3	1−2 −1100%	12−14 +1100%
Horizon Zero Dawn	9−10 −1122%	110−120 +1122%
Metro Exodus	2−3 −1100%	24−27 +1100%
The Witcher 3: Wild Hunt	1−2 −1100%	12−14 +1100%

4K
Ultra Preset

Assassin's Creed Odyssey	3−4 −1067%	35−40 +1067%
Assassin's Creed Valhalla	2−3 −1100%	24−27 +1100%
Call of Duty: Modern Warfare	2−3 −1100%	24−27 +1100%
Cyberpunk 2077	0−1	0−1
Far Cry 5	3−4 −1067%	35−40 +1067%
Forza Horizon 4	4−5 −1150%	50−55 +1150%
Watch Dogs: Legion	2−3 −1100%	24−27 +1100%

4K
Epic Preset

Red Dead Redemption 2

6−7

−1150%

75−80
+1150%

This is how HD 6990M and RX 6900 compete in popular games:

RX 6900 is 1196% faster in 900p
RX 6900 is 1171% faster in 1080p

Pros & cons summary

Performance score	5.24	69.46
Recency	12 July 2011	28 October 2020
Maximum RAM amount	2 GB	16 GB
Chip lithography	40 nm	7 nm
Power consumption (TDP)	100 Watt	255 Watt

HD 6990M has 155% lower power consumption.

RX 6900, on the other hand, has a 1225.6% higher aggregate performance score, an age advantage of 9 years, a 700% higher maximum VRAM amount, and a 471.4% more advanced lithography process.

The Radeon RX 6900 is our recommended choice as it beats the Radeon HD 6990M in performance tests.

Be aware that Radeon HD 6990M is a notebook card while Radeon RX 6900 is a desktop one.

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