Radeon Instinct MI300X vs R9 M395X

Primary details

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

Place in the ranking	377	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	12.43	no data
Architecture	GCN 3.0 (2014−2019)	CDNA 3.0 (2023−2024)
GPU code name	Amethyst	Aqua Vanjaram
Market segment	Laptop	Workstation
Release date	5 May 2015 (9 years ago)	6 December 2023 (less than a year ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	2048	19456
Core clock speed	723 MHz	1000 MHz
Boost clock speed	no data	2100 MHz
Number of transistors	5,000 million	153,000 million
Manufacturing process technology	28 nm	5 nm
Power consumption (TDP)	250 Watt	750 Watt
Texture fill rate	92.54	2,554
Floating-point processing power	2.961 TFLOPS	81.72 TFLOPS
ROPs	32	no data
TMUs	128	1216
Tensor Cores	no data	1216

Form factor & 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).

Laptop size	large	no data
Bus support	PCIe 3.0	no data
Interface	PCIe 3.0 x16	PCIe 5.0 x16
Width	no data	OAM Module
Supplementary power connectors	None	None

VRAM capacity and type

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 type	GDDR5	HBM3
Maximum RAM amount	4 GB	192 GB
Memory bus width	256 Bit	8192 Bit
Memory clock speed	1250 MHz	2525 MHz
Memory bandwidth	160.0 GB/s	5,171 GB/s
Shared memory	-	-

Connectivity and outputs

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 Connectors	No outputs	No outputs
Eyefinity	+	-

Supported technologies

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

FreeSync	+	-
HD3D	+	-
PowerTune	+	-
DualGraphics	+	-
TrueAudio	+	-
ZeroCore	+	-
Switchable graphics	+	-

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	DirectX® 12	N/A
Shader Model	6.3	N/A
OpenGL	4.4	N/A
OpenCL	Not Listed	3.0
Vulkan	-	N/A
Mantle	+	-

Pros & cons summary

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Recency	5 May 2015	6 December 2023
Maximum RAM amount	4 GB	192 GB
Chip lithography	28 nm	5 nm
Power consumption (TDP)	250 Watt	750 Watt

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