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GPU Comparison

Side-by-side comparison of specifications and performance

AMD Radeon RX 6800

AMD Radeon RX 6800

AMD Radeon HD 7990

AMD Radeon HD 7990

Performance Comparison

AMD Radeon RX 6800

365%
365%

AMD Radeon HD 7990

32%
32%
AMD Radeon RX 6800 is approximately 333% faster

Technical Specifications

SpecificationAMD Radeon RX 6800AMD Radeon HD 7990
Graphics ProcessorDifferent
Navi 21
Malta x2
CoresDifferent
3840
2048 x2
TMUsDifferent
240
128 x2
ROPsDifferent
96
32 x2
Memory SizeDifferent
16 GB
3 GB x2
Memory TypeDifferent
GDDR6
GDDR5
Bus WidthDifferent
256 bit
384 bit x2

Graphics Processor

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
GPU NameDifferent
Navi 21
Malta
GPU VariantDifferent
Navi 21 XL(215-121000187)
Malta XT(215-0849026)
ArchitectureDifferent
RDNA 2.0
GCN 1.0
Foundry
TSMC
TSMC
Process SizeDifferent
7 nm
28 nm
TransistorsDifferent
26,800 million
4,313 million
DensityDifferent
51.5M / mm²
11.8M / mm²
Die SizeDifferent
520 mm²
365 mm²
Chip PackageDifferent
BGA-2425
N/A

Graphics Card

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Release DateDifferent
Oct 28th, 2020
Apr 24th, 2013
AvailabilityDifferent
Nov 18th, 2020
N/A
GenerationDifferent
Navi II(RX 6000)
Southern Islands(HD 7900)
PredecessorDifferent
Navi
Northern Islands
SuccessorDifferent
Navi III
Sea Islands
ProductionDifferent
Active
End-of-life
Launch PriceDifferent
579 USD
999 USD
Current PriceDifferent
Amazon/Newegg
N/A
Bus InterfaceDifferent
PCIe 4.0 x16
PCIe 3.0 x16
ReviewsDifferent
22 in our database
37 in our database

Clock Speeds

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Base ClockDifferent
1700 MHz
950 MHz
Game ClockDifferent
1815 MHz
N/A
Boost ClockDifferent
2105 MHz
1000 MHz
Memory ClockDifferent
2000 MHz16 Gbps effective
1500 MHz6 Gbps effective

Memory

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Memory SizeDifferent
16 GB
3 GB
Memory TypeDifferent
GDDR6
GDDR5
Memory BusDifferent
256 bit
384 bit
BandwidthDifferent
512.0 GB/s
288.0 GB/s

Render Config

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Shading UnitsDifferent
3840
2048
TMUsDifferent
240
128
ROPsDifferent
96
32
Compute UnitsDifferent
60
32
RT CoresDifferent
60
N/A
L0 CacheDifferent
32 KB per WGP
N/A
L1 CacheDifferent
128 KB per Array
16 KB (per CU)
L2 CacheDifferent
4 MB
768 KB
L3 CacheDifferent
128 MB
N/A

Theoretical Performance

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Pixel RateDifferent
202.1 GPixel/s
32.00 GPixel/s
Texture RateDifferent
505.2 GTexel/s
128.0 GTexel/s
FP16 (half)Different
32.33 TFLOPS (2:1)
N/A
FP32 (float)Different
16.17 TFLOPS
4.096 TFLOPS
FP64 (double)Different
1,010.4 GFLOPS (1:16)
1,024.0 GFLOPS (1:4)

Board Design

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
267 mm10.5 inches
304 mm12 inches
HeightDifferent
120 mm4.7 inches
106 mm4.2 inches
WidthDifferent
40 mm1.6 inches
38 mm1.5 inches
TDPDifferent
250 W
375 W
Suggested PSUDifferent
600 W
750 W
OutputsDifferent
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Part NumberDifferent
102-D41209
N/A
Board NumberDifferent
109-D412A7-00_03
109-C47637-00A_02

Graphics Features

FeatureAMD Radeon RX 6800AMD Radeon HD 7990
DirectXDifferent
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCLDifferent
2.1
2.1 (1.2)
VulkanDifferent
1.3
1.2.175
Shader ModelDifferent
6.8
6.5 (5.1)

Comparison Summary

7
Specifications Compared
8
Feature Categories
56
Detailed Features

More Comparisons with AMD Radeon RX 6800

Compare AMD Radeon RX 6800 with other GPUs of similar performance

AMD Radeon RX 6800 vs Radeon RX 6800 XT

Radeon RX 6800 XT Performance118%

Radeon RX 6800 XT is 18% faster than AMD Radeon RX 6800

Compare Detailed Specs

AMD Radeon RX 6800 vs GeForce RTX 5060 Ti 16 GB

GeForce RTX 5060 Ti 16 GB Performance109%

GeForce RTX 5060 Ti 16 GB is 9% faster than AMD Radeon RX 6800

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AMD Radeon RX 6800 vs GeForce RTX 5060 Ti 8 GB

GeForce RTX 5060 Ti 8 GB Performance109%

GeForce RTX 5060 Ti 8 GB is 9% faster than AMD Radeon RX 6800

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AMD Radeon RX 6800 vs Radeon RX 7700 XT

Radeon RX 7700 XT Performance107%

Radeon RX 7700 XT is 7% faster than AMD Radeon RX 6800

Compare Detailed Specs

AMD Radeon RX 6800 vs Radeon RX 9060 XT 16 GB

Radeon RX 9060 XT 16 GB Performance104%

Radeon RX 9060 XT 16 GB is 4% faster than AMD Radeon RX 6800

Compare Detailed Specs

AMD Radeon RX 6800 vs GeForce RTX 3070 Ti

GeForce RTX 3070 Ti Performance103%

GeForce RTX 3070 Ti is 3% faster than AMD Radeon RX 6800

Compare Detailed Specs

More Comparisons with AMD Radeon HD 7990

Compare AMD Radeon HD 7990 with other GPUs of similar performance

AMD Radeon HD 7990 vs Radeon RX 590

Radeon RX 590 Performance115%

Radeon RX 590 is 15% faster than AMD Radeon HD 7990

Compare Detailed Specs

AMD Radeon HD 7990 vs Radeon R9 FURY

Radeon R9 FURY Performance112%

Radeon R9 FURY is 12% faster than AMD Radeon HD 7990

Compare Detailed Specs

AMD Radeon HD 7990 vs GeForce GTX 980

GeForce GTX 980 Performance111%

GeForce GTX 980 is 11% faster than AMD Radeon HD 7990

Compare Detailed Specs

AMD Radeon HD 7990 vs GeForce GTX 1650 SUPER

GeForce GTX 1650 SUPER Performance110%

GeForce GTX 1650 SUPER is 10% faster than AMD Radeon HD 7990

Compare Detailed Specs

AMD Radeon HD 7990 vs Radeon RX 6500 XT

Radeon RX 6500 XT Performance109%

Radeon RX 6500 XT is 9% faster than AMD Radeon HD 7990

Compare Detailed Specs

AMD Radeon HD 7990 vs Radeon RX 5500 XT

Radeon RX 5500 XT Performance108%

Radeon RX 5500 XT is 8% faster than AMD Radeon HD 7990

Compare Detailed Specs
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