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GPU Comparison

Side-by-side comparison of specifications and performance

AMD Radeon RX 7800 XT

AMD Radeon RX 7800 XT

AMD Radeon HD 7990

AMD Radeon HD 7990

Performance Comparison

AMD Radeon RX 7800 XT

378%
378%

AMD Radeon HD 7990

26%
26%
AMD Radeon RX 7800 XT is approximately 352% faster

Technical Specifications

SpecificationAMD Radeon RX 7800 XTAMD Radeon HD 7990
Graphics ProcessorDifferent
Navi 32
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 7800 XTAMD Radeon HD 7990
GPU NameDifferent
Navi 32
Malta
CodenameDifferent
Wheat Nas
N/A
GPU VariantDifferent
Navi 32 XT(215-180000006)
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
28,100 million
4,313 million
DensityDifferent
81.2M / mm²
11.8M / mm²
Die SizeDifferent
346 mm²
365 mm²
GCD SizeDifferent
200mm²
N/A
MCD SizeDifferent
36.6 mm² x4
N/A
Chip PackageDifferent
MCM
N/A
Package SizeDifferent
40mm × 40mm
N/A

Graphics Card

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Release DateDifferent
Aug 25th, 2023
Apr 24th, 2013
AvailabilityDifferent
Sep 6th, 2023
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
499 USD
999 USD
Current PriceDifferent
Amazon/Newegg
N/A
Bus InterfaceDifferent
PCIe 4.0 x16
PCIe 3.0 x16
ReviewsDifferent
44 in our database
37 in our database

Clock Speeds

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Base ClockDifferent
1295 MHz
950 MHz
Game ClockDifferent
2124 MHz
N/A
Boost ClockDifferent
2430 MHz
1000 MHz
Memory ClockDifferent
2438 MHz19.5 Gbps effective
1500 MHz6 Gbps effective

Memory

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Memory SizeDifferent
16 GB
3 GB
Memory TypeDifferent
GDDR6
GDDR5
Memory BusDifferent
256 bit
384 bit
BandwidthDifferent
624.1 GB/s
288.0 GB/s

Render Config

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Shading UnitsDifferent
3840
2048
TMUsDifferent
240
128
ROPsDifferent
96
32
Compute UnitsDifferent
60
32
Matrix CoresDifferent
120
N/A
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
64 MB
N/A

Theoretical Performance

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Pixel RateDifferent
233.3 GPixel/s
32.00 GPixel/s
Texture RateDifferent
583.2 GTexel/s
128.0 GTexel/s
FP16 (half)Different
74.65 TFLOPS (2:1)
N/A
FP32 (float)Different
37.32 TFLOPS
4.096 TFLOPS
FP64 (double)Different
1,166.4 GFLOPS (1:32)
1,024.0 GFLOPS (1:4)

Board Design

FeatureAMD Radeon RX 7800 XTAMD Radeon HD 7990
Slot Width
Dual-slot
Dual-slot
LengthDifferent
267 mm10.5 inches
304 mm12 inches
HeightDifferent
111 mm4.4 inches
106 mm4.2 inches
WidthDifferent
50 mm2 inches
38 mm1.5 inches
TDPDifferent
263 W
375 W
Suggested PSUDifferent
600 W
750 W
OutputsDifferent
1x HDMI 2.1a3x DisplayPort 2.1
1x DVI4x mini-DisplayPort 1.2
Power Connectors
2x 8-pin
2x 8-pin
Board NumberDifferent
109-D712A7-00_02
109-C47637-00A_02

Graphics Features

FeatureAMD Radeon RX 7800 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
62
Detailed Features

More Comparisons with AMD Radeon RX 7800 XT

Compare AMD Radeon RX 7800 XT with other GPUs of similar performance

AMD Radeon RX 7800 XT vs GeForce RTX 4070 Ti

GeForce RTX 4070 Ti Performance116%

GeForce RTX 4070 Ti is 16% faster than AMD Radeon RX 7800 XT

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AMD Radeon RX 7800 XT vs GeForce RTX 5070

GeForce RTX 5070 Performance115%

GeForce RTX 5070 is 15% faster than AMD Radeon RX 7800 XT

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AMD Radeon RX 7800 XT vs GeForce RTX 3090

GeForce RTX 3090 Performance113%

GeForce RTX 3090 is 13% faster than AMD Radeon RX 7800 XT

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AMD Radeon RX 7800 XT vs GeForce RTX 3080 Ti

GeForce RTX 3080 Ti Performance111%

GeForce RTX 3080 Ti is 11% faster than AMD Radeon RX 7800 XT

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AMD Radeon RX 7800 XT vs GeForce RTX 4070 SUPER

GeForce RTX 4070 SUPER Performance108%

GeForce RTX 4070 SUPER is 8% faster than AMD Radeon RX 7800 XT

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AMD Radeon RX 7800 XT vs Radeon RX 7900 GRE

Radeon RX 7900 GRE Performance106%

Radeon RX 7900 GRE is 6% faster than AMD Radeon RX 7800 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

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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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