RX 6600 XT vs R9 390

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Combined performance score

R9 390
23.10

RX 6600 XT outperforms R9 390 by 84% in our combined benchmark results.

General info

GPU architecture, market segment, value for money and other general parameters compared.

Place in performance ranking22078
Place by popularitynot in top-10056
Value for money12.4746.75
ArchitectureGCN 2.0 (2013−2017)Navi / RDNA2 (2020−2022)
GPU code nameGrenadaNavi 23
Market segmentDesktopDesktop
Designreferenceno data
Release date18 June 2015 (8 years old)30 July 2021 (2 years old)
Launch price (MSRP)$329 $379
Current price$20 (0.1x MSRP)$283 (0.7x MSRP)
Value for money

Performance to price ratio. The higher, the better.

RX 6600 XT has 275% better value for money than R9 390.

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores25602048
Core clock speedno data1968 MHz
Boost clock speed1000 MHz2589 MHz
Number of transistors6,200 million11,060 million
Manufacturing process technology28 nm7 nm
Power consumption (TDP)275 Watt160 (TGP) Watt
Texture fill rate160.0331.4
Floating-point performance5,120 gflopsno data

Size and compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Bus supportPCIe 3.0no data
InterfacePCIe 3.0 x16PCIe 4.0 x8
Length275 mm190 mm
Width2-slot2-slot
Supplementary power connectors1 x 6-pin, 1 x 8-pin1x 8-pin
Bridgeless CrossFire1no data

Memory

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR5GDDR6
High bandwidth memory (HBM)-no data
Maximum RAM amount0 MB8 GB
Memory bus width512 Bit128 Bit
Memory clock speed1000 MHz16000 MHz
Memory bandwidth384 GB/s256.0 GB/s
Shared memoryno data-

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors2x DVI, 1x HDMI, 1x DisplayPort1x HDMI, 2x DisplayPort
Eyefinity1no data
Number of Eyefinity displays6no data
HDMI++
DisplayPort support+no data

Technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

AppAcceleration-no data
CrossFire1no data
Enduro-no data
FreeSync1no data
HD3D-no data
PowerTune+no data
TrueAudio+no data
ZeroCore-no data
VCE+no data
DDMA audio+no data

API support

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectXDirectX® 1212.0 Ultimate (12_2)
Shader Model6.36.5
OpenGL4.64.6
OpenCL2.02.1
Vulkan+1.2
Mantle+no data

Synthetic benchmark performance

Non-gaming benchmark performance comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark performance score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

R9 390 23.10
RX 6600 XT 42.48
+83.9%

RX 6600 XT outperforms R9 390 by 84% in our combined benchmark results.


Passmark

This is the most ubiquitous GPU benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Benchmark coverage: 25%

R9 390 8953
RX 6600 XT 16465
+83.9%

RX 6600 XT outperforms R9 390 by 84% in Passmark.

3DMark Fire Strike Graphics

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic graphics and is quite taxing on hardware.

Benchmark coverage: 14%

R9 390 12730
RX 6600 XT 28342
+123%

RX 6600 XT outperforms R9 390 by 123% in 3DMark Fire Strike Graphics.

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

Full HD70−75
−88.6%
132
+88.6%
1440p40−45
−85%
74
+85%
4K21−24
−95.2%
41
+95.2%

Advantages and disadvantages


Performance score 23.10 42.48
Recency 18 June 2015 30 July 2021
Cost $329 $379
Chip lithography 28 nm 7 nm
Power consumption (TDP) 275 Watt 160 Watt

The Radeon RX 6600 XT is our recommended choice as it beats the Radeon R9 390 in performance tests.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


AMD Radeon R9 390
Radeon R9 390
AMD Radeon RX 6600 XT
Radeon RX 6600 XT

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Questions and comments

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