Intel Core i5-6400T vs Intel Core i5-6600T

Intel Core i5-6400T

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The Intel Core i5-6400T is a frugal quad-core desktop processor based on the Skylake architecture, which was announced in August 2015. The CPU, which is manufactured in a 14 nm process, runs at 2.2-2.8 GHz and does not support Hyperthreading (only 4 threads simultaneously).

Architecture

Intel uses Skylake to replace both Broadwell as well as Haswell and therefore uses one core design for all TDP classes between 4.5-45 Watts. Several improvements of the Skylake architecture include bigger Out-to-Order-Buffer, optimizations for pre-fetching as well as bigger gains by Hyperthreading. However, the changes are small for a "Tock" – a new micro architecture – in general, so the per-MHz performance is only between 5-10 % (compared to Haswell) or less than 5 % higher (compared to Broadwell), respectively.

Performance

Depending on the utilization of Hyperthreading, the performance is roughly on par with the old Core i7-2670QM mobile processor (Sandy Bridge, 2.2-2.8 GHz, Hyperthreading), but sometimes also much higher.

Graphics

Graphics are handled by the integrated Intel HD Graphics 530 with 24 EUs (Execution Units), which is clocked at 350 - 950 MHz. Compared to the HD Graphics 4600 (Haswell, 20 EUs), the performance is increased by around 25 percent. The overall GPU performance is still low-end, so modern games can, if at all, only be played smoothly with low settings.

Power Consumption

Intel specifies the TDP with 35 Watts, so it can also be used in notebooks (although bigger ones).

Intel Core i5-6600T

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The Intel Core i5-6600T is a frugal quad-core desktop processor based on the Skylake architecture, which was announced in August 2015. The CPU, which is manufactured in a 14 nm process, runs at 2.7-3.5 GHz and does not support Hyperthreading (only 4 threads simultaneously).

Architecture

Intel uses Skylake to replace both Broadwell as well as Haswell and therefore uses one core design for all TDP classes between 4.5-45 Watts. Several improvements of the Skylake architecture include bigger Out-to-Order-Buffer, optimizations for pre-fetching as well as bigger gains by Hyperthreading. However, the changes are small for a "Tock" – a new micro architecture – in general, so the per-MHz performance is only between 5-10 % (compared to Haswell) or less than 5 % higher (compared to Broadwell), respectively.

Performance

The performance should be similar to the old Core i5-2500K desktop processor (but at a much lower TDP) as well as the mobile Core i5-6440HQ (100 MHz lower base clock and GPU Turbo clock, 10 Watts higher TDP).

Graphics

Graphics are handled by the integrated Intel HD Graphics 530 with 24 EUs (Execution Units), which is clocked at 350 - 1150 MHz. Compared to the HD Graphics 4600 (Haswell, 20 EUs), the performance is increased by around 25 percent. The overall GPU performance is still low-end, so modern games can, if at all, only be played smoothly with low settings.

Power Consumption

Intel specifies the TDP with 35 Watts, so it can also be used in notebooks (although bigger ones).

Intel Core i5-6400TIntel Core i5-6600T
Intel Core i5 (Desktop)Intel Core i5 (Desktop)
SkylakeSkylake
: Core i5 (Desktop) Skylake
Intel Core i5-6600K (compare)3500 - 3900 MHz4 / 46 MB
Intel Core i5-6500 (compare)3200 - 3600 MHz4 / 46 MB
Intel Core i5-6600T2700 - 3500 MHz4 / 46 MB
Intel Core i5-6400 (compare)2700 - 3300 MHz4 / 46 MB
Intel Core i5-6500T (compare)2500 - 3100 MHz4 / 46 MB
» Intel Core i5-6400T2200 - 2800 MHz4 / 46 MB
Intel Core i5-6600K (compare)3500 - 3900 MHz4 / 46 MB
Intel Core i5-6500 (compare)3200 - 3600 MHz4 / 46 MB
» Intel Core i5-6600T2700 - 3500 MHz4 / 46 MB
Intel Core i5-6400 (compare)2700 - 3300 MHz4 / 46 MB
Intel Core i5-6500T (compare)2500 - 3100 MHz4 / 46 MB
Intel Core i5-6400T2200 - 2800 MHz4 / 46 MB
2200 - 2800 MHz2700 - 3500 MHz
256 KB256 KB
1 MB1 MB
6 MB6 MB
4 / 44 / 4
35 35
14 14
FCLGA1151FCLGA1151
DDR3(L)-1600/DDR4-2133 Memory Controller, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vProDDR3(L)-1600/DDR4-2133 Memory Controller, AVX, AVX2, AES-NI, TSX-NI, Quick Sync, Virtualization, vPro
iGPUIntel HD Graphics 530 (350 - 950 MHz)Intel HD Graphics 530 (350 - 1100 MHz)
$192 U.S.$192 U.S.
Intel Core i5 (Desktop) 6400TIntel Core i5 (Desktop) 6600T

Cinebench R15 - CPU Multi 64Bit
420 Points (10%)
min: 418     avg: 464.5     median: 464.5 (11%)     max: 511 Points
Cinebench R15 - CPU Single 64Bit
119 Points (55%)
min: 135     avg: 138     median: 138 (63%)     max: 141 Points
Cinebench R11.5 - CPU Multi 64Bit
4.8 Points (18%)
min: 5.28     avg: 5.6     median: 5.6 (21%)     max: 5.88 Points
Cinebench R11.5 - CPU Single 64Bit
1.4 Points (55%)
min: 1.5     avg: 1.6     median: 1.6 (64%)     max: 1.63 Points
Cinebench R10 - Rendering Single 32Bit
4397 Points (48%)
min: 5234     avg: 5354.5     median: 5354.5 (59%)     max: 5475 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
14798 Points (30%)
min: 16473     avg: 17622.5     median: 17622.5 (35%)     max: 18772 Points
Cinebench R10 - Rendering Multiple CPUs 64Bit
18940 Points (25%)
20716 Points (27%)
Cinebench R10 - Rendering Single CPUs 64Bit
5740 Points (56%)
6771 Points (66%)
wPrime 2.0x - 1024m *
404.5 seconds (5%)
min: 318.86     avg: 323.1     median: 323.1 (4%)     max: 327.25 seconds
wPrime 2.0x - 32m *
12.9 seconds (3%)
min: 9.912     avg: 10.1     median: 10.1 (2%)     max: 10.2 seconds
WinRAR - Result
2770 KB/s (33%)
min: 3148     avg: 3151     median: 3151 (37%)     max: 3154 KB/s
X264 HD Benchmark 4.0 - Pass 2
28.1 fps (19%)
min: 32.59     avg: 33.5     median: 33.4 (23%)     max: 34.3 fps
X264 HD Benchmark 4.0 - Pass 1
139.2 fps (52%)
min: 160.08     avg: 163.9     median: 163.9 (61%)     max: 167.7 fps
TrueCrypt - Serpent Mean 100MB
0.2 GB/s (0%)
min: 0.291     avg: 0.3     median: 0.3 (0%)     max: 0.294 GB/s
TrueCrypt - Twofish Mean 100MB
0.4 GB/s (13%)
min: 0.491     avg: 0.5     median: 0.5 (16%)     max: 0.494 GB/s
TrueCrypt - AES Mean 100MB
2.2 GB/s (11%)
min: 2.8     avg: 2.9     median: 2.9 (15%)     max: 2.9 GB/s
3DMark 06 - CPU
5161 Points (15%)
min: 5831     avg: 6275.5     median: 6275.5 (18%)     max: 6720 Points
Super Pi mod 1.5 XS 1M *
13 Seconds (3%)
min: 11     avg: 16.5     median: 16.5 (4%)     max: 22 Seconds
Super Pi mod 1.5 XS 2M *
29 Seconds (1%)
min: 24     avg: 51     median: 51 (2%)     max: 78 Seconds
Super Pi Mod 1.5 XS 32M *
681 Seconds (3%)
min: 575     avg: 934.5     median: 934.5 (4%)     max: 1294 Seconds
3DMark 11 - Performance Physics 1280x720
5475 points (29%)
5406 points (29%)
3DMark - Ice Storm Standard Physics 1280x720
42400 Points (27%)
49853 Points (32%)
3DMark - Cloud Gate Standard Physics 1280x720
3887 Points (10%)
4769 Points (12%)
3DMark - Fire Strike Physics 1920x1080
5433 Points (20%)
6686 Points (25%)
Geekbench 3 - 32 Bit Multi-Core Score
8687 Points (28%)
min: 9886     avg: 10463     median: 10463 (34%)     max: 11040 Points
Geekbench 3 - 32 Bit Single-Core Score
3000 Points (64%)
min: 3473     avg: 3528     median: 3528 (75%)     max: 3583 Points
Geekbench 3 - 64 Bit Multi-Core Score
9133 Points (24%)
min: 10304     avg: 10943     median: 10943 (29%)     max: 11582 Points
Geekbench 3 - 64 Bit Single-Core Score
3131 Points (64%)
min: 3667     avg: 3700.5     median: 3700.5 (75%)     max: 3734 Points
Sunspider - 1.0 Total Score *
89.2 ms (1%)
88.2 ms (1%)

Average Benchmarks Intel Core i5-6400T → 100%

Average Benchmarks Intel Core i5-6600T → 115%

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* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Processor Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)