AMD Radeon RX 7800 XT vs AMD Radeon R9 390

AMD Radeon RX 7800 XT on Amazon USA
AMD Radeon R9 390 on Amazon USA

Comparison of the technical characteristics between the graphics cards, with AMD Radeon RX 7800 XT on one side and AMD Radeon R9 390 on the other side. The first is dedicated to the desktop sector, it has 8192 shading units, a maximum frequency of 2.6 GHz, its lithography is 5 nm. The second is used on the desktop segment, it includes 2560 shading units, a maximum frequency of 1.0 GHz, its lithography is 28 nm. The following table also compares the boost clock, the number of shading units (if indicated), of execution units, the amount of cache memory, the maximum memory capacity, the memory bus width, the release date, the number of PCIe lanes, the values ​​obtained in various benchmarks.


Warning: the information concerning AMD Radeon RX 7800 XT comes in part from rumor-based sources.

Graphics card AMD Radeon RX 7800 XT AMD Radeon R9 390
Market (main) Desktop Desktop
Release date Q4 2022 Q2 2015
Model number Navi 32 XT 215-0880030, Grenada PRO
GPU name Navi 32 Grenada
Architecture RDNA 3.0 GCN 2.0
Generation Navi III RX 7000 Pirate Islands R9 300
Lithography 5 nm 28 nm
Bus interface PCIe 5.0 x16 PCIe 3.0 x16
GPU base clock 2.40 GHz 1.00 GHz
GPU boost clock 2.60 GHz 1.00 GHz
Memory frequency 2,250 MHz 1,500 MHz
Effective memory speed 18 GB/s 6 GB/s
Memory size 12 GB 8 GB
Memory type GDDR6 GDDR5
Memory bus 192 bit 512 bit
Memory bandwidth 432.0 GB/s 384.0 GB/s
TDP 300 W 275 W
Suggested PSU750W ATX Power Supply 600W ATX Power Supply
Multicard technology - -

3x DisplayPort

2x DVI
1x DisplayPort
Cores (compute units, SM, SMX) 128 40
Shading units 8,192 2,560
TMUs 512 160
ROPs 192 64
Cache memory 384 MB 1 MB
Pixel fillrate 499.2 GP/s 64.0 GP/s
Texture fillrate 1,331.0 GT/s 160.0 GT/s
Performance FP32 (float) 42.6 TFLOPS 5.1 TFLOPS
Performance FP64 (double) 2.7 TFLOPS 640 GFLOPS

Price: For technical reasons, we cannot currently display a price less than 24 hours, or a real-time price. This is why we prefer for the moment not to show a price. You should refer to the respective online stores for the latest price, as well as availability.

We can better compare what are the technical differences between the two graphics cards.

Performances :

Performance comparison between the two processors, for this we consider the results generated on benchmark software such as Geekbench 4.

FP32 Performance in GFLOPS
AMD Radeon RX 7800 XT 42,600
AMD Radeon R9 390 5,120

The difference is 732%.

Single precision floating point format, also known as FP32, is a computer number format that typically occupies 32 bits in PC memory. This represents a wide dynamic range of numeric values that employs a floating point.

See also:

AMD Radeon R9 390 X2AMD Radeon R9 390X


AMD Radeon RX 7800 XT Nvidia equivalentAMD Radeon R9 390 Nvidia equivalent © 2022 - Information - XML sitemap - Privacy policy - Advertising policy - Contact


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