T400 vs Radeon 550X

Place in the ranking	709	466
Place by popularity	not in top-100	not in top-100
Architecture	GCN 4.0 (2016−2020)	Turing (2018−2022)
GPU code name	Lexa	TU117
Market segment	Desktop	Desktop
Release date	27 March 2019 (5 years ago)	6 May 2021 (3 years 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	512	384
Core clock speed	1082 MHz	420 MHz
Boost clock speed	1218 MHz	1425 MHz
Number of transistors	2,200 million	4,700 million
Manufacturing process technology	14 nm	12 nm
Power consumption (TDP)	50 Watt	30 Watt
Texture fill rate	38.98	34.20
Floating-point processing power	1.247 TFLOPS	1.094 TFLOPS
ROPs	16	16
TMUs	32	24

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).

Interface	PCIe 3.0 x8	PCIe 3.0 x16
Length	145 mm	no data
Width	2-slot	1-slot
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	GDDR6
Maximum RAM amount	2 GB	2 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1750 MHz	1250 MHz
Memory bandwidth	112.0 GB/s	80 GB/s

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	1x DVI, 1x HDMI, 1x DisplayPort	3x mini-DisplayPort
HDMI	+	-

API compatibility

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

DirectX	12 (12_0)	12 (12_1)
Shader Model	6.4	6.6
OpenGL	4.6	4.6
OpenCL	2.0	3.0
Vulkan	1.2.131	1.2
CUDA	-	7.5

Synthetic benchmark performance

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

Combined synthetic benchmark score

This is our combined benchmark 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.

Radeon 550X 3.70

T400 9.41
+154%

Passmark

This is the most ubiquitous GPU benchmark. 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.

Radeon 550X 1428

T400 3631
+154%

Gaming performance

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

Pros & cons summary

Performance score	3.70	9.41
Recency	27 March 2019	6 May 2021
Chip lithography	14 nm	12 nm
Power consumption (TDP)	50 Watt	30 Watt

T400 has a 154.3% higher aggregate performance score, an age advantage of 2 years, a 16.7% more advanced lithography process, and 66.7% lower power consumption.

The T400 is our recommended choice as it beats the Radeon 550X in performance tests.

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