Radeon RX 6800 XT vs HD 7990

VS

Aggregate performance score

We've compared Radeon HD 7990 and Radeon RX 6800 XT, covering specs and all relevant benchmarks.

HD 7990
2013
3 GB GDDR5, 375 Watt
14.44

RX 6800 XT outperforms HD 7990 by a whopping 350% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking36228
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.5150.58
Power efficiency2.6414.84
ArchitectureGCN 1.0 (2011−2020)RDNA 2.0 (2020−2024)
GPU code nameMaltaNavi 21
Market segmentDesktopDesktop
Release date24 April 2013 (11 years ago)28 October 2020 (4 years ago)
Launch price (MSRP)$999 $649

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

RX 6800 XT has 3250% better value for money than HD 7990.

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 cores20484608
Core clock speed950 MHz1825 MHz
Boost clock speed1000 MHz2250 MHz
Number of transistors4,313 million26,800 million
Manufacturing process technology28 nm7 nm
Power consumption (TDP)375 Watt300 Watt
Texture fill rate128.0648.0
Floating-point processing power4.096 TFLOPS20.74 TFLOPS
ROPs32128
TMUs128288
Ray Tracing Coresno data72

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).

InterfacePCIe 3.0 x16PCIe 4.0 x16
Length307 mm267 mm
Width2-slot2-slot
Supplementary power connectors2x 8-pin2x 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 typeGDDR5GDDR6
Maximum RAM amount3 GB16 GB
Memory bus width384 Bit256 Bit
Memory clock speed1500 MHz2000 MHz
Memory bandwidth288.0 GB/s512.0 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 Connectors1x DVI, 4x mini-DisplayPort1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI-+

API compatibility

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

DirectX12 (11_1)12 Ultimate (12_2)
Shader Model5.16.5
OpenGL4.64.6
OpenCL1.22.1
Vulkan1.2.1311.2

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 7990 14.44
RX 6800 XT 64.95
+350%

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 7990 5565
RX 6800 XT 25027
+350%

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

HD 7990 15540
RX 6800 XT 49735
+220%

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 HD45−50
−360%
207
+360%
1440p30−35
−377%
143
+377%
4K18−21
−417%
93
+417%

Cost per frame, $

1080p22.203.14
1440p33.304.54
4K55.506.98

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 120−130
+0%
120−130
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 130−140
+0%
130−140
+0%
Assassin's Creed Valhalla 158
+0%
158
+0%
Battlefield 5 200−210
+0%
200−210
+0%
Call of Duty: Modern Warfare 110−120
+0%
110−120
+0%
Cyberpunk 2077 120−130
+0%
120−130
+0%
Far Cry 5 110−120
+0%
110−120
+0%
Far Cry New Dawn 150−160
+0%
150−160
+0%
Forza Horizon 4 230−240
+0%
230−240
+0%
Hitman 3 132
+0%
132
+0%
Horizon Zero Dawn 240−250
+0%
240−250
+0%
Metro Exodus 144
+0%
144
+0%
Red Dead Redemption 2 122
+0%
122
+0%
Shadow of the Tomb Raider 260−270
+0%
260−270
+0%
Watch Dogs: Legion 309
+0%
309
+0%

Full HD
High Preset

Assassin's Creed Odyssey 130−140
+0%
130−140
+0%
Assassin's Creed Valhalla 135
+0%
135
+0%
Battlefield 5 200−210
+0%
200−210
+0%
Call of Duty: Modern Warfare 110−120
+0%
110−120
+0%
Cyberpunk 2077 120−130
+0%
120−130
+0%
Far Cry 5 110−120
+0%
110−120
+0%
Far Cry New Dawn 150−160
+0%
150−160
+0%
Forza Horizon 4 230−240
+0%
230−240
+0%
Hitman 3 136
+0%
136
+0%
Horizon Zero Dawn 240−250
+0%
240−250
+0%
Metro Exodus 144
+0%
144
+0%
Red Dead Redemption 2 110−120
+0%
110−120
+0%
Shadow of the Tomb Raider 355
+0%
355
+0%
The Witcher 3: Wild Hunt 130−140
+0%
130−140
+0%
Watch Dogs: Legion 309
+0%
309
+0%

Full HD
Ultra Preset

Assassin's Creed Odyssey 130−140
+0%
130−140
+0%
Assassin's Creed Valhalla 118
+0%
118
+0%
Call of Duty: Modern Warfare 110−120
+0%
110−120
+0%
Cyberpunk 2077 120−130
+0%
120−130
+0%
Far Cry 5 110−120
+0%
110−120
+0%
Forza Horizon 4 230−240
+0%
230−240
+0%
Hitman 3 122
+0%
122
+0%
Horizon Zero Dawn 279
+0%
279
+0%
Shadow of the Tomb Raider 302
+0%
302
+0%
The Witcher 3: Wild Hunt 160
+0%
160
+0%
Watch Dogs: Legion 112
+0%
112
+0%

Full HD
Epic Preset

Red Dead Redemption 2 120
+0%
120
+0%

1440p
High Preset

Battlefield 5 140−150
+0%
140−150
+0%
Far Cry New Dawn 100−110
+0%
100−110
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 75−80
+0%
75−80
+0%
Assassin's Creed Valhalla 98
+0%
98
+0%
Call of Duty: Modern Warfare 75−80
+0%
75−80
+0%
Cyberpunk 2077 65−70
+0%
65−70
+0%
Far Cry 5 75−80
+0%
75−80
+0%
Forza Horizon 4 270−280
+0%
270−280
+0%
Hitman 3 114
+0%
114
+0%
Horizon Zero Dawn 215
+0%
215
+0%
Metro Exodus 112
+0%
112
+0%
Shadow of the Tomb Raider 222
+0%
222
+0%
The Witcher 3: Wild Hunt 110−120
+0%
110−120
+0%
Watch Dogs: Legion 314
+0%
314
+0%

1440p
Epic Preset

Red Dead Redemption 2 116
+0%
116
+0%

4K
High Preset

Battlefield 5 75−80
+0%
75−80
+0%
Far Cry New Dawn 60−65
+0%
60−65
+0%
Hitman 3 55−60
+0%
55−60
+0%
Horizon Zero Dawn 220−230
+0%
220−230
+0%
Metro Exodus 126
+0%
126
+0%
The Witcher 3: Wild Hunt 110
+0%
110
+0%

4K
Ultra Preset

Assassin's Creed Odyssey 50−55
+0%
50−55
+0%
Assassin's Creed Valhalla 65
+0%
65
+0%
Call of Duty: Modern Warfare 45−50
+0%
45−50
+0%
Cyberpunk 2077 30−35
+0%
30−35
+0%
Far Cry 5 45−50
+0%
45−50
+0%
Forza Horizon 4 100−110
+0%
100−110
+0%
Shadow of the Tomb Raider 133
+0%
133
+0%
Watch Dogs: Legion 49
+0%
49
+0%

4K
Epic Preset

Red Dead Redemption 2 76
+0%
76
+0%

This is how HD 7990 and RX 6800 XT compete in popular games:

  • RX 6800 XT is 360% faster in 1080p
  • RX 6800 XT is 377% faster in 1440p
  • RX 6800 XT is 417% faster in 4K

All in all, in popular games:

  • there's a draw in 72 tests (100%)

Pros & cons summary


Performance score 14.44 64.95
Recency 24 April 2013 28 October 2020
Maximum RAM amount 3 GB 16 GB
Chip lithography 28 nm 7 nm
Power consumption (TDP) 375 Watt 300 Watt

RX 6800 XT has a 349.8% higher aggregate performance score, an age advantage of 7 years, a 433.3% higher maximum VRAM amount, a 300% more advanced lithography process, and 25% lower power consumption.

The Radeon RX 6800 XT is our recommended choice as it beats the Radeon HD 7990 in performance tests.


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

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AMD Radeon HD 7990
Radeon HD 7990
AMD Radeon RX 6800 XT
Radeon RX 6800 XT

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


4.2 55 votes

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4.3 3554 votes

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Questions & comments

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