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

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 i5-6400

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The Intel Core i5-6400 is a desktop class quad-core CPU. The additional 4 threads are not available to the CPU as it is missing the HyperThreading support. The i5-6400 is based on Skylake architecture and clocks within the 2.7 GHz to 3.3 GHz range. 

ModelIntel Core i5-6600TIntel Core i5-6400
SeriesIntel Core i5 (Desktop)Intel Core i5 (Desktop)
CodenameSkylakeSkylake
Series: Core i5 (Desktop) Skylake
Intel Core i5-6600K compare3.5 - 3.9 GHz4 / 4 cores6 MB L3
Intel Core i5-6500 compare3.2 - 3.6 GHz4 / 4 cores6 MB L3
Intel Core i5-6600T « 2.7 - 3.5 GHz4 / 4 cores6 MB L3
Intel Core i5-64002.7 - 3.3 GHz4 / 4 cores6 MB L3
Intel Core i5-6500T compare2.5 - 3.1 GHz4 / 4 cores6 MB L3
Intel Core i5-6400T compare2.2 - 2.8 GHz4 / 4 cores6 MB L3
Intel Core i5-6600K compare3.5 - 3.9 GHz4 / 4 cores6 MB L3
Intel Core i5-6500 compare3.2 - 3.6 GHz4 / 4 cores6 MB L3
Intel Core i5-6600T2.7 - 3.5 GHz4 / 4 cores6 MB L3
Intel Core i5-6400 « 2.7 - 3.3 GHz4 / 4 cores6 MB L3
Intel Core i5-6500T compare2.5 - 3.1 GHz4 / 4 cores6 MB L3
Intel Core i5-6400T compare2.2 - 2.8 GHz4 / 4 cores6 MB L3
Clock2700 - 3500 MHz2700 - 3300 MHz
L1 Cache256 KB256 KB
L2 Cache1 MB1 MB
L3 Cache6 MB6 MB
Cores / Threads4 / 44 / 4
TDP35 Watt65 Watt
Technology14 nm14 nm
SocketFCLGA1151FCLGA1151
FeaturesDDR3(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 - 1100 MHz)Intel HD Graphics 530 (350 - 950 MHz)
Architecturex86x86
$192 U.S.$187 U.S.
Announced
ManufacturerIntel Core i5 (Desktop) 6600TIntel Core i5 (Desktop) 6400

Benchmarks

Cinebench R15 - Cinebench R15 CPU Multi 64 Bit
min: 418     avg: 464.5     median: 464.5 (5%)     max: 511 Points
110%
6400 +
510 Points (5%)
Cinebench R15 - Cinebench R15 CPU Single 64 Bit
min: 135     avg: 138     median: 138 (42%)     max: 141 Points
134 Points (41%)
Cinebench R11.5 - Cinebench R11.5 CPU Multi 64 Bit
min: 5.28     avg: 5.6     median: 5.6 (8%)     max: 5.88 Points
106%
6400 +
5.9 Points (8%)
Cinebench R11.5 - Cinebench R11.5 CPU Single 64 Bit
min: 1.5     avg: 1.6     median: 1.6 (5%)     max: 1.63 Points
1.5 Points (5%)
Cinebench R10 - Cinebench R10 Rend. Single (32bit)
min: 5234     avg: 5355     median: 5354.5 (44%)     max: 5475 Points
5088 Points (42%)
Cinebench R10 - Cinebench R10 Rend. Multi (32bit)
min: 16473     avg: 17623     median: 17622.5 (20%)     max: 18772 Points
104%
6400 +
18297 Points (21%)
Cinebench R10 - Cinebench R10 Rend. Multi (64bit)
100%
1 6600T +
20716 Points (15%)
Cinebench R10 - Cinebench R10 Rend. Single (64bit)
100%
1 6600T +
6771 Points (37%)
wPrime 2.10 - wPrime 2.0 1024m *
min: 318.9     avg: 323.1     median: 323.1 (4%)     max: 327.3 s
100%
6400 +
327.1 s (4%)
wPrime 2.10 - wPrime 2.0 32m *
min: 9.912     avg: 10.1     median: 10.1 (2%)     max: 10.2 s
100%
6400 +
10.5 s (2%)
WinRAR - WinRAR 4.0
100%
1 6600T +
min: 3148     avg: 3151     median: 3151 (18%)     max: 3154 Points
X264 HD Benchmark 4.0 - x264 Pass 2
min: 32.59     avg: 33.5     median: 33.4 (12%)     max: 34.3 fps
101%
6400 +
33.9 fps (12%)
X264 HD Benchmark 4.0 - x264 Pass 1
min: 160.1     avg: 163.9     median: 163.9 (39%)     max: 167.7 fps
150.1 fps (35%)
TrueCrypt - TrueCrypt Serpent
min: 0.291     avg: 0.3     median: 0.3 (0%)     max: 0.294 GB/s
0.3 GB/s (0%)
TrueCrypt - TrueCrypt Twofish
min: 0.491     avg: 0.5     median: 0.5 (0%)     max: 0.494 GB/s
0.4 GB/s (0%)
TrueCrypt - TrueCrypt AES
min: 2.8     avg: 2.9     median: 2.9 (0%)     max: 2.9 GB/s
2.7 GB/s (0%)
3DMark 06 - CPU - 3DMark 06 - CPU
100%
1 6600T +
min: 5831     avg: 6276     median: 6275.5 (13%)     max: 6720 Points
Super Pi mod 1.5 XS 1M - Super Pi mod 1.5 XS 1M *
min: 11     avg: 16.5     median: 16.5 (4%)     max: 22 s
101%
6400 +
12 s (3%)
Super Pi mod 1.5 XS 2M - Super Pi mod 1.5 XS 2M *
min: 24     avg: 51     median: 51 (2%)     max: 78 s
101%
6400 +
27.6 s (1%)
Super Pi Mod 1.5 XS 32M - Super Pi mod 1.5 XS 32M *
min: 575     avg: 935     median: 934.5 (4%)     max: 1294 s
101%
6400 +
660 s (3%)
3DMark 11 - 3DM11 Performance Physics
5406 Points (15%)
116%
6400 +
6283 Points (17%)
3DMark - 3DMark Ice Storm Physics
49853 Points (32%)
48092 Points (31%)
3DMark - 3DMark Ice Storm Extreme Physics
100%
1 6400 +
50839 Points (42%)
3DMark - 3DMark Ice Storm Unlimited Physics
100%
1 6400 +
53239 Points (45%)
3DMark - 3DMark Cloud Gate Physics
4769 Points (12%)
103%
6400 +
4894 Points (12%)
3DMark - 3DMark Fire Strike Standard Physics
6686 Points (12%)
103%
6400 +
6903 Points (13%)
Geekbench 3 - Geekbench 3 32 Bit Multi-Core
100%
1 6600T +
min: 9886     avg: 10463     median: 10463 (19%)     max: 11040 Points
Geekbench 3 - Geekbench 3 32 Bit Single-Core
100%
1 6600T +
min: 3473     avg: 3528     median: 3528 (69%)     max: 3583 Points
Geekbench 3 - Geekbench 3 64 Bit Multi-Core
100%
1 6600T +
min: 10304     avg: 10943     median: 10943 (17%)     max: 11582 Points
Geekbench 3 - Geekbench 3 64 Bit Single-Core
100%
1 6600T +
min: 3667     avg: 3701     median: 3700.5 (55%)     max: 3734 Points
Sunspider - Sunspider 1.0 Total Score *
88.2 ms (1%)
100%
6400 +
82.9 ms (1%)

Average Benchmarks Intel Core i5-6600T → 100% n=21

Average Benchmarks Intel Core i5-6400 → 100% n=21

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* 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)