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GPU Comparison

Side-by-side comparison of specifications and performance

AMD Radeon RX 7900 XT

AMD Radeon RX 7900 XT

AMD Radeon HD 6990

AMD Radeon HD 6990

Performance Comparison

AMD Radeon RX 7900 XT

826%
826%

AMD Radeon HD 6990

14%
14%
AMD Radeon RX 7900 XT is approximately 812% faster

Technical Specifications

SpecificationAMD Radeon RX 7900 XTAMD Radeon HD 6990
Graphics ProcessorDifferent
Navi 31
Antilles x2
CoresDifferent
5376
1536 x2
TMUsDifferent
336
96 x2
ROPsDifferent
192
32 x2
Memory SizeDifferent
20 GB
2 GB x2
Memory TypeDifferent
GDDR6
GDDR5
Bus WidthDifferent
320 bit
256 bit x2

Graphics Processor

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
GPU NameDifferent
Navi 31
Antilles
CodenameDifferent
Plum Bonito
N/A
GPU VariantDifferent
Navi 31 XT(215-145000156)
Antilles XT(215-0807027)
ArchitectureDifferent
RDNA 3.0
TeraScale 3
Foundry
TSMC
TSMC
Process SizeDifferent
5 nm
40 nm
MCD ProcessDifferent
6 nm
N/A
Process TypeDifferent
N5 / N6 FinFET
N/A
TransistorsDifferent
57,700 million
2,640 million
GCD TransistorsDifferent
45,400 million
N/A
MCD TransistorsDifferent
2,050 million x6
N/A
DensityDifferent
109.1M / mm²
6.8M / mm²
GCD DensityDifferent
150.2M / mm²
N/A
MCD DensityDifferent
54.64M / mm²
N/A
Die SizeDifferent
529 mm²
389 mm²
GCD Die SizeDifferent
304.35 mm²
N/A
MCD Die SizeDifferent
37.52 mm² x6
N/A
Chip PackageDifferent
MCM
N/A

Graphics Card

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Release DateDifferent
Nov 3rd, 2022
Mar 8th, 2011
AvailabilityDifferent
Dec 13th, 2022
N/A
GenerationDifferent
Navi III(RX 7000)
Northern Islands(HD 6900)
PredecessorDifferent
Navi II
Evergreen
SuccessorDifferent
Navi IV
Southern Islands
ProductionDifferent
Active
End-of-life
Launch PriceDifferent
899 USD
699 USD
Current PriceDifferent
Amazon/Newegg
N/A
Bus InterfaceDifferent
PCIe 4.0 x16
PCIe 2.0 x16
ReviewsDifferent
23 in our database
47 in our database

Clock Speeds

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Base ClockDifferent
1387 MHz
N/A
Shader ClockDifferent
2025 MHz
N/A
Game ClockDifferent
2025 MHz
N/A
Boost ClockDifferent
2394 MHz
N/A
Memory ClockDifferent
2500 MHz20 Gbps effective
1250 MHz5 Gbps effective
GPU ClockDifferent
N/A
830 MHz

Memory

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Memory SizeDifferent
20 GB
2 GB
Memory TypeDifferent
GDDR6
GDDR5
Memory BusDifferent
320 bit
256 bit
BandwidthDifferent
800.0 GB/s
160.0 GB/s

Render Config

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Shading UnitsDifferent
5376
1536
TMUsDifferent
336
96
ROPsDifferent
192
32
Compute UnitsDifferent
84
24
Matrix CoresDifferent
168
N/A
RT CoresDifferent
84
N/A
L0 CacheDifferent
64 KB per WGP
N/A
L1 CacheDifferent
256 KB per Array
8 KB (per CU)
L2 CacheDifferent
6 MB
512 KB
L3 CacheDifferent
80 MB
N/A

Theoretical Performance

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Pixel RateDifferent
459.6 GPixel/s
26.56 GPixel/s
Texture RateDifferent
804.4 GTexel/s
79.68 GTexel/s
FP16 (half)Different
103.0 TFLOPS (2:1)
N/A
FP32 (float)Different
51.48 TFLOPS
2.550 TFLOPS
FP64 (double)Different
1.609 TFLOPS (1:32)
637.4 GFLOPS (1:4)

Board Design

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
276 mm10.9 inches
310 mm12.2 inches
HeightDifferent
110 mm4.3 inches
115 mm4.5 inches
WidthDifferent
51 mm2 inches
40 mm1.6 inches
TDPDifferent
300 W
375 W
Suggested PSUDifferent
700 W
750 W
OutputsDifferent
1x HDMI 2.1a2x DisplayPort 2.11x USB Type-C
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Board NumberDifferent
109-D704A7-00_02
109-C20647-00

Graphics Features

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 6990
DirectXDifferent
12 Ultimate (12_2)
11.2 (11_0)
OpenGLDifferent
4.6
4.4
OpenCLDifferent
2.2
1.2
VulkanDifferent
1.3
N/A
Shader ModelDifferent
6.8
5.0

Comparison Summary

7
Specifications Compared
8
Feature Categories
67
Detailed Features

More Comparisons with AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs GeForce RTX 4080 SUPER

GeForce RTX 4080 SUPER Performance117%

GeForce RTX 4080 SUPER is 17% faster than AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs GeForce RTX 4080

GeForce RTX 4080 Performance116%

GeForce RTX 4080 is 16% faster than AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs Radeon RX 7900 XTX

Radeon RX 7900 XTX Performance116%

Radeon RX 7900 XTX is 16% faster than AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs GeForce RTX 5070 Ti

GeForce RTX 5070 Ti Performance114%

GeForce RTX 5070 Ti is 14% faster than AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs Radeon RX 9070 XT

Radeon RX 9070 XT Performance109%

Radeon RX 9070 XT is 9% faster than AMD Radeon RX 7900 XT

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AMD Radeon RX 7900 XT vs Radeon RX 7900 XT

Radeon RX 7900 XT Performance100%

Radeon RX 7900 XT is 0% slower than AMD Radeon RX 7900 XT

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More Comparisons with AMD Radeon HD 6990

Compare AMD Radeon HD 6990 with other GPUs of similar performance

AMD Radeon HD 6990 vs GeForce GTX 1650

GeForce GTX 1650 Performance119%

GeForce GTX 1650 is 19% faster than AMD Radeon HD 6990

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AMD Radeon HD 6990 vs Radeon RX 6400

Radeon RX 6400 Performance117%

Radeon RX 6400 is 17% faster than AMD Radeon HD 6990

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AMD Radeon HD 6990 vs Arc A380

Arc A380 Performance115%

Arc A380 is 15% faster than AMD Radeon HD 6990

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AMD Radeon HD 6990 vs GeForce GTX 780

GeForce GTX 780 Performance115%

GeForce GTX 780 is 15% faster than AMD Radeon HD 6990

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AMD Radeon HD 6990 vs Radeon HD 7970 GHz Edition

Radeon HD 7970 GHz Edition Performance104%

Radeon HD 7970 GHz Edition is 4% faster than AMD Radeon HD 6990

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AMD Radeon HD 6990 vs GeForce GTX 590

GeForce GTX 590 Performance104%

GeForce GTX 590 is 4% faster than AMD Radeon HD 6990

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