Today we’re seeing a very interesting announcement from Qualcomm: The new Snapdragon 675 chipset is a direct successor to the current generation Snapdragon 670 which was only announced back in August. The Snapdragon 675 iterates on the current design, bringing some important upgrades.

Qualcomm Snapdragon Upper Mid-Range SoCs
SoC Snapdragon 670 Snapdragon 710 Snapdragon 675
CPU 2x Kryo 360 (CA75)
@ 2.0GHz 


6x Kryo 360 (CA55)
@ 1.7GHz
2x Kryo 360 (CA75)
@ 2.2GHz 


6x Kryo 360 (CA55)
@ 1.7GHz
2x Kryo 460 (CA76)
@ 2.0GHz
256KB L2

6x Kryo 460 (CA55)
@ 1.7GHz
64KB L2
GPU Adreno 615 Adreno 616 Adreno 612
DSP Hexagon 685 
ISP/
Camera
Spectra 250 ISP
25MP single / 16MP dual
Spectra 250 ISP
32MP single / 20MP dual
Spectra 250 ISP
triple-camera support
Memory 2x 16-bit @ 1866MHz
LPDDR4X
14.9GB/s

1MB system cache
Integrated Modem Snapdragon X12 LTE
(Category 15/13)
DL = 600Mbps
3x20MHz CA, 256-QAM

UL = 150Mbps
2x20MHz CA, 64-QAM
Snapdragon X15 LTE
(Category 15/13)
DL = 800Mbps
3x20MHz CA, 256-QAM

UL = 150Mbps
2x20MHz CA, 64-QAM
Snapdragon X12 LTE
(Category 12/13)
DL = 600Mbps
3x20MHz CA, 256-QAM

UL = 150Mbps
2x20MHz CA, 64-QAM
Encode/
Decode
2160p30, 1080p120
H.264 & H.265
2160p30, 1080p120
H.264 & H.265
2160p30, 1080p120
H.264 & H.265
Mfc. Process 10nm LPP 11nm LPP

The new SoC platform is Qualcomm’s first to employ the newest generation “Kryo 460” CPU microarchitecture. Obviously Qualcomm is still using Arm’s “Built on Arm Cortex Technology” CPU license, meaning the SoC uses a customised order of the Arm IP. What is very exciting to see is that the Snapdragon 675’s Kryo 460 performance CPUs are based on the new Cortex A76 cores. I think this is the first time that a SoC vendor actually introduces a new CPU microarchitecture in a mid-range product first, as I had expected Qualcomm to unveil it in the upcoming Snapdragon flagship.

The performance cores come in a 2x configuration clocking at up to 2GHz, accompanied by 6x Cortex A55 derived efficiency cores, running at up to 1.8GHz.

The CPU performance improvements over the Snapdragon 670’s Cortex A75-based Kryo setup are quoted by Qualcomm to range from 15% in app launches, up to 35% in web browsing scenarios. This roughly matches Arm’s claims of the IPC improvements of the new microarchitecture, and because the Snapdragon 675 is running at the same clock as the Snapdragon 670, the performance improvements are actually due to just the new generation cores.

What also is quite weird is that the new SoC should in effect also outperform the Snapdragon 710 – even though the latter is in a higher tier segment. We’ll likely see a successor to this platform sometime in the future.

As of time of writing, Qualcomm didn’t talk much about raw performance improvements of the GPU. It’s still an Adreno 61x series GPU, and I expect it to be in the performance range of the Adreno 615 or 616.

What Qualcomm did talk about, is that the new SoC employs some sort of software “gaming enhancements” that promise up to 90% fewer janks. Again I followed up with a request with more technical explanation as to what this is, but with no official response as of yet. What is very obvious here is that this sounds strikingly similar to Huawei/Honor’s “GPU Turbo” mechanism in what it promises to achieve. Hopefully we’ll have a more detailed explanation in the future. Similar to GPU Turbo, these gaming enhancements appear to be game title specific.

An improvement on the ISP side is the new support for seamless triple-camera setups. The new Snapdragon 675 adds an additional MIPI CSI port, totalling up to three. This allows the new SoC to be able to operate three cameras at once, which is something that will seemingly become very popular in the comings months as more devices with telephoto, wide-angle, and super-wide angle modules are announced. Here the ISP hardware needs to be capable of enough in terms of throughput to deal with the large amount of pixel data from the sensors.

Qualcomm enables the hardware and software to support both bokeh (portrait modes) and HDR shots in a single shot. Bokeh effects are supported by multiple techniques; either stereo depth sensing via dual cameras, active depth sensing via time-of-flight, or just simply by a single camera sensor which has phase detection pixels.

First Samsung 11nm “11LPP” product?

What surprised me even more than the announcement of a Cortex A76 mid-range SoC, was the revelation that it’s manufactured on Samsung’s new 11LPP manufacturing node. Samsung’s 11nm node is a mix of its 14 and 10nm nodes, and is targeted for cost-effective solutions while still maintaining performance competitiveness with the 10nm products.

Qualcomm didn’t talk much about power efficiency of the Snapdragon 675, and it’s likely that we won’t be seeing any major improvements.

Again it’s remarkable to see Qualcomm having such short product refresh cycles in this range, as seemingly competition is fierce and pricing in the mid-range is a cut-throat business in order to achieve design wins.

The big remaining question is where and when does the Snapdragon 675 position itself against its current counter-parts? The new SoC is scheduled to be available in commercial devices in Q1 of 2019. As Snapdragon 670 devices have already started to launch, the two products will co-exist with each other for some time.

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  • djayjp - Tuesday, October 23, 2018 - link

    Though if most applications are written to only take advantage of a max of 4 threads maybe having some spare cpu resources (given such weak cores) isn't such a bad idea. Plus the battery life (and efficiency) of the small cores is much better. Reply
  • Wilco1 - Tuesday, October 23, 2018 - link

    And the small cores are ... well, very small, so having a few more of them doesn't cost much area. Reply
  • serendip - Tuesday, October 23, 2018 - link

    The big cores are only fired up on app loading and for gaming, so having more efficient little cores makes sense because they're running all the time. Reply
  • ZolaIII - Wednesday, October 24, 2018 - link

    All six A55's use same amount of energy as one A76. In SMP tasks using floating point operations six A55's will be faster (when software can utilise that much core's) than two A76's using the energy of one. A76 shine only in integer operations that aren't (efficient) used for SMP, as it's 3x the performance of an A55. For 97% of tasks you won't ever need more than two big cores. Reply
  • eastcoast_pete - Tuesday, October 23, 2018 - link

    QC out of the gate so quickly with an A76? Yes, they realize that there are strong headwinds ahead. One downside of abandoning core customization and just use ARM's stock designs is that it's now a lot more apples-to-apples vs. other fabless competitors. I wonder if QC will try it's hands at a more heavily customized A76 for their next 8X5 flagship. They used to be really good at it. Reply
  • phoenix_rizzen - Tuesday, October 23, 2018 - link

    Slides show the efficiency cluster running at 1.7 GHz. The table shows 1.8 GHz. Reply
  • phoenix_rizzen - Monday, October 29, 2018 - link

    Fixed. Reply
  • Javert89 - Wednesday, October 24, 2018 - link

    Since the A76 offers the performance of a 2.8 ghz A75 at only 1.92 ghz.. Then this is the most powerful single-core SoC ever presented by Qualcomm! Reply
  • levizx - Sunday, November 25, 2018 - link

    This is a cut-down version, Kirin 980 uses a built-up version. Reply
  • Inzamam - Saturday, March 02, 2019 - link

    So Xiaomi Launch Redmi note 7 pro With SD 675 and Sony IMX 586 48 MP sensor along with headphone jack and USB C... 64/4GB for $197.19

    For India
    Reply

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