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Intel Atom Z3745

Intel 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.

SeriesIntel Atom
CodenameBay Trail-T
Series: Atom Bay Trail-T
Intel Atom Z3795 (compare)1590 - 2390 MHz4 / 4
Intel Atom Z3785 (compare)1490 - 2410 MHz4 / 4
Intel Atom Z3775 (compare)1460 - 2390 MHz4 / 4
Intel Atom Z3775D (compare)1490 - 2410 MHz4 / 4
Intel Atom Z3770 (compare)1460 - 2400 MHz4 / 4
Intel Atom Z3770D (compare)1500 - 2410 MHz4 / 4
Intel Atom Z3736F (compare)1330 - 2160 MHz4 / 4
Intel Atom Z3736G (compare)1330 - 2160 MHz4 / 4
» Intel Atom Z37451330 - 1860 MHz4 / 4
Intel Atom Z3745D (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3740 (compare)1330 - 1860 MHz4 / 4
Intel Atom Z3740D (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3735D (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3735E (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3735F (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3735G (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3680 (compare)1330 - 2000 MHz2 / 2
Intel Atom Z3680D (compare)1330 - 2000 MHz2 / 2
Clock Rate1330 - 1860 MHz
Level 1 Cache224 KB
Level 2 Cache2 MB
Number of Cores / Threads4 / 4
Max. Power Consumption (TDP = Thermal Design Power)<4 Watt
Manufacturing Technology22 nm
SocketUTFCBGA1380
FeaturesIntel 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
GPUIntel HD Graphics (Bay Trail) (311 - 778 MHz)
64 Bit64 Bit support
Starting Price$32 U.S.
Announcement Date06/01/2014
Product Link (external)Intel Atom Z3745

Benchmarks

Cinebench R10 - Rendering Single 32Bit
min: 929     avg: 947.7     median: 941 (12%)     max: 973 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 2491     avg: 3037.7     median: 3229 (6%)     max: 3393 Points
3DMark 11 - Performance Physics 1280x720
min: 1005     avg: 1183.3     median: 1261 (8%)     max: 1284 points
3DMark - Ice Storm Standard Physics 1280x720
min: 0     avg: 11965.6     median: 14758 (9%)     max: 15195 Points
3DMark - Ice Storm Extreme Physics 1920x1080
min: 14732     avg: 15505.2     median: 15528 (23%)     max: 16016 Points
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
min: 17393     avg: 17863.5     median: 17761 (26%)     max: 18752 Points
3DMark - Cloud Gate Standard Physics 1280x720
min: 1186     avg: 1234     median: 1255 (3%)     max: 1261 Points
Geekbench 2 - 32 Bit - Floating Point
min: 2321     avg: 2723.5     median: 2723.5 (8%)     max: 3126 Points
Geekbench 3 - 32 Bit Multi-Core Score
min: 2217     avg: 2378.6     median: 2397 (8%)     max: 2507 Points
Geekbench 3 - 32 Bit Single-Core Score
min: 734     avg: 764.6     median: 764 (16%)     max: 790 Points
Linpack Android / IOS - Multi Thread
min: 326.873     avg: 552.4     median: 590 (20%)     max: 620 MFLOPS
Linpack Android / IOS - Single Thread
min: 200     avg: 220     median: 208.5 (20%)     max: 260 MFLOPS
Mozilla Kraken 1.1 - Total Score *
min: 5496     avg: 7295.3     median: 6008.5 (10%)     max: 15635 ms
Sunspider - 1.0 Total Score *
min: 423.3     avg: 605.8     median: 641 (16%)     max: 752.9 ms
Sunspider - 0.9.1 Total Score *
min: 620.5     avg: 666.5     median: 666.5 (6%)     max: 712.5 ms
Octane V2 - Total Score
min: 3470     avg: 5213.8     median: 5189 (11%)     max: 6510 Points
Vellamo 3.x - Metal
min: 1085     avg: 1127.3     median: 1107.5 (30%)     max: 1213 Points
Vellamo 3.x - Multicore Beta
min: 1446     avg: 1493.3     median: 1474.5 (33%)     max: 1581 Points
Vellamo 3.x - Browser
min: 2774     avg: 2964.2     median: 3011.5 (40%)     max: 3108 Points
Quadrant Standard Edition 2.0
min: 0     avg: 13797     median: 17885 (41%)     max: 19418 points
AnTuTu Benchmark v4 - Total Score
min: 31690     avg: 33030.8     median: 32811.5 (76%)     max: 34810 points
AnTuTu Benchmark v5 - Total Score
min: 33318     avg: 34946     median: 33635 (42%)     max: 37656 Points
AndEBench - Native
min: 14914     avg: 16893.2     median: 17437.5 (57%)     max: 17784 Iter./s
PassMark PerformanceTest Mobile V1 - CPU Tests
min: 20763     avg: 26176     median: 27592 (10%)     max: 28757 Points
- 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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