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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 7990

AMD Radeon HD 7990

Performance Comparison

AMD Radeon RX 7900 XT

566%
566%

AMD Radeon HD 7990

21%
21%
AMD Radeon RX 7900 XT is approximately 545% faster

Technical Specifications

SpecificationAMD Radeon RX 7900 XTAMD Radeon HD 7990
Graphics ProcessorDifferent
Navi 31
Malta x2
CoresDifferent
5376
2048 x2
TMUsDifferent
336
128 x2
ROPsDifferent
192
32 x2
Memory SizeDifferent
20 GB
3 GB x2
Memory TypeDifferent
GDDR6
GDDR5
Bus WidthDifferent
320 bit
384 bit x2

Graphics Processor

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
GPU NameDifferent
Navi 31
Malta
CodenameDifferent
Plum Bonito
N/A
GPU VariantDifferent
Navi 31 XT(215-145000156)
Malta XT(215-0849026)
ArchitectureDifferent
RDNA 3.0
GCN 1.0
Foundry
TSMC
TSMC
Process SizeDifferent
5 nm
28 nm
MCD ProcessDifferent
6 nm
N/A
Process TypeDifferent
N5 / N6 FinFET
N/A
TransistorsDifferent
57,700 million
4,313 million
GCD TransistorsDifferent
45,400 million
N/A
MCD TransistorsDifferent
2,050 million x6
N/A
DensityDifferent
109.1M / mm²
11.8M / mm²
GCD DensityDifferent
150.2M / mm²
N/A
MCD DensityDifferent
54.64M / mm²
N/A
Die SizeDifferent
529 mm²
365 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 7990
Release DateDifferent
Nov 3rd, 2022
Apr 24th, 2013
AvailabilityDifferent
Dec 13th, 2022
N/A
GenerationDifferent
Navi III(RX 7000)
Southern Islands(HD 7900)
PredecessorDifferent
Navi II
Northern Islands
SuccessorDifferent
Navi IV
Sea Islands
ProductionDifferent
Active
End-of-life
Launch PriceDifferent
899 USD
999 USD
Current PriceDifferent
Amazon/Newegg
N/A
Bus InterfaceDifferent
PCIe 4.0 x16
PCIe 3.0 x16
ReviewsDifferent
23 in our database
37 in our database

Clock Speeds

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
Base ClockDifferent
1387 MHz
950 MHz
Shader ClockDifferent
2025 MHz
N/A
Game ClockDifferent
2025 MHz
N/A
Boost ClockDifferent
2394 MHz
1000 MHz
Memory ClockDifferent
2500 MHz20 Gbps effective
1500 MHz6 Gbps effective

Memory

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
Memory SizeDifferent
20 GB
3 GB
Memory TypeDifferent
GDDR6
GDDR5
Memory BusDifferent
320 bit
384 bit
BandwidthDifferent
800.0 GB/s
288.0 GB/s

Render Config

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
Shading UnitsDifferent
5376
2048
TMUsDifferent
336
128
ROPsDifferent
192
32
Compute UnitsDifferent
84
32
Matrix CoresDifferent
168
N/A
RT CoresDifferent
84
N/A
L0 CacheDifferent
64 KB per WGP
N/A
L1 CacheDifferent
256 KB per Array
16 KB (per CU)
L2 CacheDifferent
6 MB
768 KB
L3 CacheDifferent
80 MB
N/A

Theoretical Performance

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
Pixel RateDifferent
459.6 GPixel/s
32.00 GPixel/s
Texture RateDifferent
804.4 GTexel/s
128.0 GTexel/s
FP16 (half)Different
103.0 TFLOPS (2:1)
N/A
FP32 (float)Different
51.48 TFLOPS
4.096 TFLOPS
FP64 (double)Different
1.609 TFLOPS (1:32)
1,024.0 GFLOPS (1:4)

Board Design

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
276 mm10.9 inches
304 mm12 inches
HeightDifferent
110 mm4.3 inches
106 mm4.2 inches
WidthDifferent
51 mm2 inches
38 mm1.5 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-C47637-00A_02

Graphics Features

FeatureAMD Radeon RX 7900 XTAMD Radeon HD 7990
DirectXDifferent
12 Ultimate (12_2)
12 (11_1)
OpenGL
4.6
4.6
OpenCLDifferent
2.2
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
66
Detailed Features

More Comparisons with AMD Radeon RX 7900 XT

Compare AMD Radeon RX 7900 XT with other GPUs of similar performance

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 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

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AMD Radeon HD 7990 vs Radeon R9 FURY

Radeon R9 FURY Performance112%

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

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AMD Radeon HD 7990 vs GeForce GTX 980

GeForce GTX 980 Performance111%

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

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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

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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

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