Radeon 660M vs T400

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Aggregate performance score

We've compared T400 with Radeon 660M, including specs and performance data.

T400
2021
2 GB GDDR6, 30 Watt
9.40

660M outperforms T400 by an impressive 73% based on our aggregate benchmark results.

Primary details

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

Place in the ranking466326
Place by popularitynot in top-100not in top-100
Power efficiency21.7028.20
ArchitectureTuring (2018−2022)RDNA 2.0 (2020−2024)
GPU code nameTU117Rembrandt+
Market segmentWorkstationDesktop
Release date6 May 2021 (3 years ago)3 January 2023 (1 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 cores384384
Core clock speed420 MHz1500 MHz
Boost clock speed1425 MHz1900 MHz
Number of transistors4,700 million13,100 million
Manufacturing process technology12 nm6 nm
Power consumption (TDP)30 Watt40 Watt
Texture fill rate34.2045.60
Floating-point processing power1.094 TFLOPS1.459 TFLOPS
ROPs1616
TMUs2424
Ray Tracing Coresno data6

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).

InterfacePCIe 3.0 x16PCIe 4.0 x8
Width1-slotIGP
Supplementary power connectorsNoneNone

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 typeGDDR6System Shared
Maximum RAM amount2 GBSystem Shared
Memory bus width64 BitSystem Shared
Memory clock speed1250 MHzSystem Shared
Memory bandwidth80 GB/sno data
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 Connectors3x mini-DisplayPortPortable Device Dependent

API compatibility

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

DirectX12 (12_1)12 Ultimate (12_2)
Shader Model6.66.7
OpenGL4.64.6
OpenCL3.02.0
Vulkan1.21.3
CUDA7.5-

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.

T400 9.40
Radeon 660M 16.29
+73.3%

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.

T400 3626
Radeon 660M 6285
+73.3%

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 HD14−16
−78.6%
25
+78.6%

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077 24
+0%
24
+0%

Full HD
Medium Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 26
+0%
26
+0%
Battlefield 5 30−33
+0%
30−33
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 20
+0%
20
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Far Cry New Dawn 27−30
+0%
27−30
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 21
+0%
21
+0%
Horizon Zero Dawn 50−55
+0%
50−55
+0%
Metro Exodus 30−35
+0%
30−35
+0%
Red Dead Redemption 2 27−30
+0%
27−30
+0%
Shadow of the Tomb Raider 30−35
+0%
30−35
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
High Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 19
+0%
19
+0%
Battlefield 5 30−33
+0%
30−33
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 14
+0%
14
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Far Cry New Dawn 27−30
+0%
27−30
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 21
+0%
21
+0%
Horizon Zero Dawn 50−55
+0%
50−55
+0%
Metro Exodus 30−35
+0%
30−35
+0%
Red Dead Redemption 2 27−30
+0%
27−30
+0%
Shadow of the Tomb Raider 33
+0%
33
+0%
The Witcher 3: Wild Hunt 24−27
+0%
24−27
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
Ultra Preset

Assassin's Creed Odyssey 21−24
+0%
21−24
+0%
Assassin's Creed Valhalla 14−16
+0%
14−16
+0%
Call of Duty: Modern Warfare 20−22
+0%
20−22
+0%
Cyberpunk 2077 14−16
+0%
14−16
+0%
Far Cry 5 21−24
+0%
21−24
+0%
Forza Horizon 4 65−70
+0%
65−70
+0%
Hitman 3 18−20
+0%
18−20
+0%
Horizon Zero Dawn 22
+0%
22
+0%
Shadow of the Tomb Raider 27
+0%
27
+0%
The Witcher 3: Wild Hunt 15
+0%
15
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

Full HD
Epic Preset

Red Dead Redemption 2 27−30
+0%
27−30
+0%

1440p
High Preset

Battlefield 5 18−20
+0%
18−20
+0%
Far Cry New Dawn 14−16
+0%
14−16
+0%

1440p
Ultra Preset

Assassin's Creed Odyssey 10−11
+0%
10−11
+0%
Assassin's Creed Valhalla 6−7
+0%
6−7
+0%
Call of Duty: Modern Warfare 10−11
+0%
10−11
+0%
Cyberpunk 2077 5−6
+0%
5−6
+0%
Far Cry 5 10−12
+0%
10−12
+0%
Forza Horizon 4 40−45
+0%
40−45
+0%
Hitman 3 12−14
+0%
12−14
+0%
Horizon Zero Dawn 20−22
+0%
20−22
+0%
Metro Exodus 14−16
+0%
14−16
+0%
Shadow of the Tomb Raider 12−14
+0%
12−14
+0%
The Witcher 3: Wild Hunt 9−10
+0%
9−10
+0%
Watch Dogs: Legion 60−65
+0%
60−65
+0%

1440p
Epic Preset

Red Dead Redemption 2 16−18
+0%
16−18
+0%

4K
High Preset

Battlefield 5 9−10
+0%
9−10
+0%
Far Cry New Dawn 7−8
+0%
7−8
+0%
Hitman 3 6−7
+0%
6−7
+0%
Horizon Zero Dawn 40−45
+0%
40−45
+0%
Metro Exodus 8−9
+0%
8−9
+0%
The Witcher 3: Wild Hunt 7−8
+0%
7−8
+0%

4K
Ultra Preset

Assassin's Creed Odyssey 6−7
+0%
6−7
+0%
Assassin's Creed Valhalla 4−5
+0%
4−5
+0%
Call of Duty: Modern Warfare 4−5
+0%
4−5
+0%
Cyberpunk 2077 1−2
+0%
1−2
+0%
Far Cry 5 5−6
+0%
5−6
+0%
Forza Horizon 4 12−14
+0%
12−14
+0%
Shadow of the Tomb Raider 6−7
+0%
6−7
+0%
Watch Dogs: Legion 3−4
+0%
3−4
+0%

4K
Epic Preset

Red Dead Redemption 2 9−10
+0%
9−10
+0%

This is how T400 and Radeon 660M compete in popular games:

  • Radeon 660M is 79% faster in 1080p

All in all, in popular games:

  • there's a draw in 72 tests (100%)

Pros & cons summary


Performance score 9.40 16.29
Recency 6 May 2021 3 January 2023
Chip lithography 12 nm 6 nm
Power consumption (TDP) 30 Watt 40 Watt

T400 has 33.3% lower power consumption.

Radeon 660M, on the other hand, has a 73.3% higher aggregate performance score, an age advantage of 1 year, and a 100% more advanced lithography process.

The Radeon 660M is our recommended choice as it beats the T400 in performance tests.

Be aware that T400 is a workstation graphics card while Radeon 660M is a desktop one.


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

Vote for your favorite

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NVIDIA T400
T400
AMD Radeon 660M
Radeon 660M

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.8 375 votes

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Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.