Intel Core M-5Y71
The Intel Core M-5Y71 is an ULV (ultra-low voltage) dual-core SoC based on the Broadwell architecture launched in late 2014. Thanks to its TDP of just 4.5 W (configurable), the CPU is suited for passively cooled tablets and 2-in-1 notebooks. In addition to two CPU cores with Hyper-Threading clocked at 1.2 - 2.9 GHz, the chip also integrates an HD Graphics 5300 GPU and a dual-channel LPDDR3/DDR3L(-RS) memory controller up to 25.6 GB/s. The chip is manufactured in a 14 nm process with FinFET transistors.
Architecture
Broadwell represents the "Tick" in Intel's Tick-Tock model, which means a shrink of its predecessor Haswell. The new 14 nm manufacturing process with three-dimensional FinFET transistors allows not only improvements in energy efficiency, but also a significantly smaller die size fit for more compact packages and devices.
Further advantages result from the revised microarchitecture of Broadwell. Due to its improved branch prediction, bigger buffer sizes (1500 instead of 1000 entries in the L2 TLB) and other tweaks, the performance per clock has been increased by more than 5 percent over its predecessor. There are also some new instruction set extensions designed for cryptographic applications.
Performance
The Core M-5Y71 offers a very wide turbo range from 1.2 - 2.9 GHz. However, the actual frequency is largely limited by the TDP. While the CPU is similar to a Core i7-4500U (Haswell, 15 W) in short benchmarks, its performance will begin to degrade under continuous full load. Accordingly, the main purpose of Broadwell's higher power efficiency is to reduce power consumption instead of improving raw performance.
Overall, the Core M-5Y71 will be sufficient for office and multimedia purposes as well as more demanding applications.
Graphics
The integrated HD Graphics 5300 offers 24 Execution Units (EUs) clocked at 300 - 900 MHz. Similar to the CPU core, the GPU architecture (Intel Gen 8) has been thoroughly revised for improved performance-per-clock. However, the GPU frequency is also limited by the TDP, which prevents significant performance boosts over the older HD 4200 under continuous 3D load. Current games as of 2014 will be playable in low settings and XGA resolution.
Broadwell is the first Intel chip to fully support DirectX 11.2 as well as OpenCL 1.3/2.0 and OpenGL 4.3. Video will output natively via DisplayPort 1.2 or HDMI 1.4a. However, the new HDMI 2.0 standard is not supported.
Power Consumption
With a TDP of only 4.5 W, the Core M-5Y71 draws noticeably less power than the Haswell Y-series (11.5 W). However, the TDP can be set to different values such as 3.5 or 6 W, affecting clock rates and performance (6 W: 1.4 GHz base clock, 3.5 W: 0.6 GHz base clock). The CPU can be passively cooled even in thin tablets.
| Series | Intel Core M |
| Codename | Broadwell |
| Series: Core M Broadwell | |
| Clock Rate | 1200 - 2900 MHz |
| Level 1 Cache | 128 KB |
| Level 2 Cache | 512 KB |
| Level 3 Cache | 4 MB |
| Number of Cores / Threads | 2 / 4 |
| Max. Power Consumption (TDP = Thermal Design Power) | 4.5 Watt |
| Transistor Count | 1300 Million |
| Manufacturing Technology | 14 nm |
| Die Size | 82 mm2 |
| Max. Temperature | 95 °C |
| Socket | FCBGA1234 |
| Features | HD Graphics 5300 (300 - 900 MHz), Dual-Channel DDR3L(-RS)/LPDDR3 Memory Controller (max. 800 MHz, 25.6 GB/s), HyperThreading, AVX, AVX2, Quick Sync, Virtualization, AES-NI, TSX-NI, vPro |
| GPU | Intel HD Graphics 5300 (300 - 900 MHz) |
| 64 Bit | 64 Bit support |
| Announcement Date | 12/01/2014 |
|
| Product Link (external) | Intel Core M 5Y71 |
Benchmarks
Cinebench R15 - CPU Multi 64Bit
min: 124 avg: 176.8 median: 187 (9%) max: 209 Points
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Cinebench R15 - CPU Single 64Bit
min: 62 avg: 90.5 median: 96 (49%) max: 108 Points
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Cinebench R11.5 - CPU Multi 64Bit
min: 1.57 avg: 2.1 median: 2.1 (9%) max: 2.64 Points
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Cinebench R11.5 - CPU Single 64Bit
min: 0.66 avg: 1.1 median: 1.1 (52%) max: 1.35 Points
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Cinebench R10 - Rendering Single 32Bit
min: 2341 avg: 3581.8 median: 3778 (48%) max: 4430 Points
AMD Geode LX 800 -96%
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Intel Core i7-940 -1%
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Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 4909 avg: 6396.3 median: 6518 (13%) max: 7640 Points
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Cinebench R10 - Rendering Multiple CPUs 64Bit
min: 6212 avg: 8483 median: 8459 (21%) max: 10802 Points
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Cinebench R10 - Rendering Single CPUs 64Bit
min: 3117 avg: 4737 median: 5026.5 (41%) max: 5778 Points
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wPrime 2.0x - 1024m *
633 seconds (7%)
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VIA C3-M C3-M-1200 1237%
wPrime 2.0x - 32m *
17.8 seconds (4%)
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min: 2327 avg: 2376 median: 2376 (28%) max: 2425 KB/s
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X264 HD Benchmark 4.0 - Pass 2
min: 11.13 avg: 12.3 median: 11.5 (7%) max: 14.43 fps
Intel Pentium 4 2.4 GHz -85%
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X264 HD Benchmark 4.0 - Pass 1
min: 81.93 avg: 86.1 median: 85.1 (36%) max: 91.19 fps
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TrueCrypt - Serpent Mean 100MB
min: 0.144 avg: 0.2 median: 0.1 (9%) max: 0.147 GB/s
Intel Pentium 4 2.4 GHz -87%
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Intel Xeon E5-2680 1033%
TrueCrypt - Twofish Mean 100MB
min: 0.253 avg: 0.3 median: 0.3 (12%) max: 0.255 GB/s
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TrueCrypt - AES Mean 100MB
min: 1.5 avg: 1.5 median: 1.5 (12%) max: 1.6 GB/s
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Intel Core M-5Y71
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min: 2296 avg: 2714 median: 2503 (20%) max: 3343 Points
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Super Pi mod 1.5 XS 1M *
min: 13.109 avg: 13.2 median: 13.2 (3%) max: 13.36 Seconds
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Intel Core i7-940 0%
Intel Core i7-940 0%
Intel Core i7-940 0%
Intel Core i7-940 0%
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VIA C3-M C3-M-1200 3400%
min: 30.012 avg: 30.2 median: 30.3 (1%) max: 30.329 Seconds
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Intel Core M-5Y71
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Super Pi Mod 1.5 XS 32M *
min: 685.138 avg: 745.3 median: 774.5 (3%) max: 776.339 Seconds
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VIA C3-M C3-M-1200 2921%
3DMark 11 - Performance Physics 1280x720
min: 1978 avg: 2518.5 median: 2522.5 (15%) max: 3051 points
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3DMark - Ice Storm Standard Physics 1280x720
min: 16771 avg: 25703.5 median: 25421.5 (16%) max: 35200 Points
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3DMark - Ice Storm Extreme Physics 1920x1080
23600 Points (34%)
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Intel Core M-5Y71
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3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
38906 Points (56%)
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Intel Core M-5Y71
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3DMark - Cloud Gate Standard Physics 1280x720
min: 1552 avg: 2006.8 median: 2122.5 (5%) max: 2230 Points
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3DMark - Fire Strike Physics 1920x1080
min: 2423 avg: 2925 median: 2946 (13%) max: 3385 Points
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Geekbench 2 - 32 Bit - Stream
6909 Points (56%)
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Geekbench 2 - 32 Bit - Memory
5593 Points (51%)
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Geekbench 2 - 32 Bit - Floating Point
4769 Points (14%)
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Intel Core M-5Y71
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Geekbench 2 - 32 Bit - Integer
5624 Points (17%)
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Intel Core M-5Y71
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Geekbench 2 - 32 Bit - Total Score
5447 Points (21%)
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Intel Core M-5Y71
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Geekbench 3 - 32 Bit Multi-Core Score
min: 4207 avg: 4277.5 median: 4277.5 (14%) max: 4348 Points
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Intel Core M-5Y71
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Geekbench 3 - 32 Bit Single-Core Score
min: 2441 avg: 2467 median: 2467 (53%) max: 2493 Points
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Geekbench 3 - 64 Bit Multi-Core Score
4637 Points (12%)
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Geekbench 3 - 64 Bit Single-Core Score
2680 Points (56%)
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Mozilla Kraken 1.1 - Total Score *
min: 2360.3 avg: 2552.4 median: 2552.4 (4%) max: 2744.4 ms
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Sunspider - 1.0 Total Score *
min: 102.7 avg: 116.3 median: 108.1 (3%) max: 138.1 ms
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Intel Core i7-4790K 2%
Intel Core i7-4790K 2%
Intel Core i7-4790K 2%
Intel Core i7-4790K 2%
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Octane V2 - Total Score
min: 13528 avg: 13618 median: 13618 (28%) max: 13708 Points
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- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
