Intel Atom Z3785 vs Intel Atom Z3740D

Intel Atom Z3785

► remove Intel Z3785

The Intel Atom Z3785 is a power efficient quad-core SoC for Windows and Android tablets. It is clocked at 1.49 - 2.41 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 Z3775, the Z3785 offers slightly increased clock rates for the CPU, GPU and memory controller.

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 a clock speed of 1.49 - 2.41 GHz, the Z3785 is significantly faster than previous Intel Atoms, e.g. the Z2760. The Z3785 even beats some of the Kabini APUs like the AMD A4-5000, as well as ARM SoCs like Tegra 4 and the Snapdragon 800. For everyday tasks such as Internet or Office the performance is adequate, but not for very complex (Windows) 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 833 MHz, the GPU is even slower than the HD Graphics (Ivy Bridge) and comparable to the Qualcomm Adreno 320 (as found in the Snapdragon 600). Therefore, only older and less demanding Windows games 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 2.2 watts, which indicates a TDP of less than 4 watts. Thus, the chip can be used in passively cooled tablets.

Intel Atom Z3740D

► remove Intel Z3740D

The Intel Atom Z3740D is a power-efficient quad-core SoC for Windows and Android tablets. It is clocked at 1.33 - 1.83 GHz and is part of the Bay Trail-T platform. Thanks to the specially optimized 22nm low-power design process (P1271) with Tri-Gate transistors, performance and energy efficiency have been significantly improved compared to its predecessor. In contrast to the Z3740, the Z3740D only offers a single-channel memory controller and a lower display resolution.

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, and 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 additions 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 Z3740D is significantly faster than previous Intel Atoms like the Z2760. According to our benchmarks, the Z3740D even competes with AMDs Temash and Kabini APUs like the 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 688 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 1920 x 1200 pixels are no problem for the chip.

Power Consumption

The entire SoC is rated at an SDP of 2.2 W, which indicates a TDP of less than 4 W. Thus, the chip can be used in passively cooled tablets.

Intel Atom Z3785Intel Atom Z3740D
Intel AtomIntel Atom
Bay Trail-TBay Trail-T
: Atom Bay Trail-T
Intel Atom Z3795 (compare)1590 - 2390 MHz4 / 4
» Intel Atom Z37851490 - 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 Z3745 (compare)1330 - 1860 MHz4 / 4
Intel Atom Z3745D (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3740 (compare)1330 - 1860 MHz4 / 4
Intel Atom Z3740D1330 - 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
Intel Atom Z3795 (compare)1590 - 2390 MHz4 / 4
Intel Atom Z37851490 - 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 Z3745 (compare)1330 - 1860 MHz4 / 4
Intel Atom Z3745D (compare)1330 - 1830 MHz4 / 4
Intel Atom Z3740 (compare)1330 - 1860 MHz4 / 4
» Intel Atom Z3740D1330 - 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
1490 - 2410 MHz1330 - 1830 MHz
224 KB224 KB
2 MB2 MB
4 / 44 / 4
<4 <4
22 22
UTFCBGA1380UTFCBGA1380
Intel HD Graphics (Bay Trail, 313 - 833 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 LPDDR3-1333Intel HD Graphics (Bay Trail, 313 - 688 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. 2 GB Single-Channel DDR3L-RS 1333, Quick Sync
iGPUIntel HD Graphics (Bay Trail) (313 - 833 MHz)Intel HD Graphics (Bay Trail) (313 - 688 MHz)
Intel Atom Z3785Intel Atom Z3740D
$32 U.S.

Cinebench R10 - Rendering Single 32Bit
min: 685     avg: 894.8     median: 963 (11%)     max: 968 Points
Cinebench R10 - Rendering Multiple CPUs 32Bit
min: 2442     avg: 3047     median: 3222 (5%)     max: 3301 Points
wPrime 2.0x - 1024m *
1001.9 seconds (12%)
wPrime 2.0x - 32m *
31.9 seconds (6%)
WinRAR - Result
min: 1378     avg: 1556.5     median: 1556 (18%)     max: 1735 KB/s
X264 HD Benchmark 4.0 - Pass 2
7.8 fps (0%)
X264 HD Benchmark 4.0 - Pass 1
31.9 fps (12%)
TrueCrypt - Serpent Mean 100MB
0.1 GB/s (5%)
TrueCrypt - Twofish Mean 100MB
0.2 GB/s (5%)
TrueCrypt - AES Mean 100MB
0.7 GB/s (4%)
3DMark 06 - CPU
1827 Points (12%)
Super Pi mod 1.5 XS 1M *
min: 45     avg: 45.6     median: 45 (10%)     max: 46 Seconds
Super Pi mod 1.5 XS 2M *
min: 98     avg: 99.4     median: 99 (4%)     max: 100 Seconds
Super Pi Mod 1.5 XS 32M *
min: 2106     avg: 2122     median: 2122 (9%)     max: 2137 Seconds
SiSoft Sandra Dhrystone (MIPS)
19790 MIPS (9%)
SiSoft Sandra Whetstone (MFLOPS)
9280 MFLOPS (7%)
3DMark 11 - Performance Physics 1280x720
min: 1049     avg: 1233     median: 1266 (7%)     max: 1350 points
3DMark - Ice Storm Standard Physics 1280x720
14993 Points (10%)
3DMark - Ice Storm Unlimited Physics 1280x720 offscreen
12461 Points (14%)
3DMark - Cloud Gate Standard Physics 1280x720
1269 Points (3%)
Geekbench 2 - 32 Bit - Stream
2282 Points (18%)
Geekbench 2 - 32 Bit - Memory
2068 Points (19%)
Geekbench 2 - 32 Bit - Floating Point
2602 Points (4%)
Geekbench 2 - 32 Bit - Integer
2939 Points (5%)
Geekbench 2 - 32 Bit - Total Score
2581 Points (6%)
Sunspider - 1.0 Total Score *
min: 423     avg: 670.5     median: 586 (6%)     max: 1002 ms

Average Benchmarks Intel Atom Z3740D → 100%

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

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Redaktion, 2017-09- 8 (Update: 2017-09-11)