Intel Atom Z3745
The Intel Atom Z3745 is a power efficient quad-core SoC for Windows and Android tablets. It is clocked at 1.33 - 1.86 GHz and part of the Bay Trail-T platform. Thanks to the specially optimized 22 nanometer low-power process (P1271) with tri-gate transistors, performance and energy efficiency have been significantly improved compared to its predecessor. Compared to the Z3740, the Z3745 is based on the new C0 stepping and offers a slightly increased GPU clock rate.
Architecture
The processor cores are based on the new Silvermont architecture, which is an out-of-order design for the first time. The increased utilization of the pipeline and many other improvements (optimized branch prediction, increased buffers, enhanced decoders) have increased the performance per clock by about 50 percent. At the same time, however, the Hyper-Threading feature of the previous generation has been removed. Other major changes are the support for new instruction set extensions such as SSE 4.1 and 4.2 as well as AES-NI (depending on the model).
Performance
Thanks to 4 CPU cores and the improved performance per clock, the Z3745 is significantly faster than previous Intel Atoms, e.g. the Z2760. Depending on the benchmark, the Z3745 competes with Temash and Kabini APUs like the AMD A6-1450 and A4-5000. For everyday tasks such as Internet or Office the performance is adequate, but not for very complex software or modern games.
Graphics
The HD Graphics (Bay Trail) is based on the Intel Gen7 architecture, which supports DirectX 11 and is also found in the Ivy Bridge series (e.g. HD Graphics 4000). With only 4 EUs (Execution Units) and a relatively low clock speed of up to 778 MHz, the GPU is even slower than the HD Graphics (Ivy Bridge). Therefore, only older and less demanding Windows games like World of Warcraft or Fifa will run fluently. However, video acceleration and display resolutions up to 2560 x 1600 pixels are no problem for the chip.
Power Consumption
The entire SoC is rated at an SDP of 2 watts, which indicates a TDP of less than 4 watts. Thus, the chip can be used in passively cooled tablets.
| Series | Intel Atom |
| Codename | Bay Trail-T |
| Series: Atom Bay Trail-T | |
| Clock Rate | 1330 - 1860 MHz |
| Level 1 Cache | 224 KB |
| Level 2 Cache | 2 MB |
| Number of Cores / Threads | 4 / 4 |
| Max. Power Consumption (TDP = Thermal Design Power) | <4 Watt |
| Manufacturing Technology | 22 nm |
| Socket | UTFCBGA1380 |
| Features | Intel HD Graphics (Bay Trail, 311 - 778 MHz), Quick Sync, Wireless Display, Clear Video HD, Intel 64, SSE 4.1, SSE 4.2, AES-NI, Secure Key, Anti-Theft, Identify-Protection, max. 4 GB Dual-Channel LPDDR3-1067 |
| GPU | Intel HD Graphics (Bay Trail) (311 - 778 MHz) |
| 64 Bit | 64 Bit support |
| Starting Price | $32 U.S. |
| Announcement Date | 06/01/2014 |
|
| Product Link (external) | Intel Atom Z3745 |
Benchmarks
Cinebench R10 - Rendering Single 32Bit
min: 929 avg: 947.7 median: 941 (10%) max: 973 Points
AMD Geode LX 800 -86%
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Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 2491 avg: 3037.7 median: 3229 (5%) max: 3393 Points
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3DMark 11 - Performance Physics 1280x720
min: 1005 avg: 1183.3 median: 1261 (6%) max: 1284 points
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3DMark - Ice Storm Standard Physics 1280x720
min: 14743 avg: 14957 median: 14945 (10%) max: 15195 Points
Intel Atom Z3745
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3DMark - Ice Storm Extreme Physics 1920x1080
min: 14732 avg: 15505.2 median: 15528 (18%) max: 16016 Points
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3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 17393 avg: 17863.5 median: 17761 (21%) max: 18752 Points
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3DMark - Cloud Gate Standard Physics 1280x720
min: 1186 avg: 1234 median: 1255 (3%) max: 1261 Points
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Intel Atom Z3745
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3DMark - Fire Strike Physics 1920x1080
1783 Points (5%)
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Geekbench 2 - 32 Bit - Stream
min: 1715 avg: 1772 median: 1772 (14%) max: 1829 Points
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Geekbench 2 - 32 Bit - Memory
min: 1590 avg: 1660 median: 1660 (15%) max: 1730 Points
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Geekbench 2 - 32 Bit - Floating Point
min: 2321 avg: 2723.5 median: 2723 (5%) max: 3126 Points
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Geekbench 2 - 32 Bit - Integer
min: 1457 avg: 1759 median: 1759 (3%) max: 2061 Points
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Geekbench 2 - 32 Bit - Total Score
min: 1811 avg: 2077.5 median: 2077 (5%) max: 2344 Points
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Geekbench 3 - 32 Bit Multi-Core Score
min: 2217 avg: 2378.6 median: 2397 (3%) max: 2507 Points
Intel Atom Z3745
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Geekbench 3 - 32 Bit Single-Core Score
min: 734 avg: 764.6 median: 764 (16%) max: 790 Points
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Linpack Android / IOS - Multi Thread
min: 326 avg: 552.4 median: 590 (20%) max: 620 MFLOPS
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Linpack Android / IOS - Single Thread
min: 200 avg: 220 median: 208 (20%) max: 260 MFLOPS
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Mozilla Kraken 1.1 - Total Score *
min: 5496 avg: 7295.3 median: 6008 (10%) max: 15635 ms
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Sunspider - 1.0 Total Score *
min: 423 avg: 605.8 median: 641 (7%) max: 752 ms
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Sunspider - 0.9.1 Total Score *
min: 620 avg: 666.5 median: 666 (6%) max: 712 ms
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unknown 951%
min: 3470 avg: 5213.8 median: 5189 (10%) max: 6510 Points
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min: 1085 avg: 1127.3 median: 1107 (30%) max: 1213 Points
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Vellamo 3.x - Multicore Beta
min: 1446 avg: 1493.3 median: 1474 (33%) max: 1581 Points
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min: 2774 avg: 2964.2 median: 3011 (40%) max: 3108 Points
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Quadrant Standard Edition 2.0
min: 17491 avg: 18396 median: 18279 (42%) max: 19418 points
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min: 31690 avg: 33030.8 median: 32811 (76%) max: 34810 points
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min: 33318 avg: 34946 median: 33635 (34%) max: 37656 Points
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AnTuTu v6 - Total Score
34692 Points (12%)
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min: 875 avg: 957.8 median: 982 (30%) max: 992 Iter./s
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min: 14914 avg: 16893.2 median: 17437 (57%) max: 17784 Iter./s
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PassMark PerformanceTest Mobile V1 - CPU Tests
min: 20763 avg: 26176 median: 27592 (4%) max: 28757 Points
Intel Atom Z3745
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PCMark for Android - Work performance score
4298 Points (22%)
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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
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