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AMD Ryzen Family Will Include 6 Core Processors – 6 Core Variant Will Clock Up To 3.7 GHz, 8 Core With Up To 4.0 GHz Clock Speeds


A day after it was rumored that the AMD Ryzen processor family will not include a 6 core model, another leak has popped up which says otherwise. Not only is it now confirmed that AMD will have a 6 core SKU in the line up but clock speeds for at least two models have also been confirmed.

AMD Ryzen High-End Processor Lineup Will Include Multiple 4, 6 and 8 Core Models With SMT Support

The previous rumor said that it is possible for the mainstream models of the Ryzen family to not include any 6 core variants. But the latest leak by Videocardz have confirmed that 6 core models do exist. At least two models have been confirmed and both of them are retail models, finalized when it comes to clock speeds and were spotted in a benchmark entry. Following are the details for both the 8 core and 6 core models which were entered in the benchmark database.

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AMD Ryzen 8 Core Model With Up To 4.0 GHz Boost Clocks

The AMD Ryzen 8 core model comes with SMT enabled and has 16 threads. The chip is labeled as "ZD3406BAM88F4_38/34_Y" which also reveals both base and boost clocks. The base clocks for this chip are 3.4 GHz and the boost clocks are spec'd at 3.8 GHz. The processor will feature 16 MB of L3 cache and 4 MB of L2 cache in total. The TDP for the 8 core model is rated at 95W and will feature an unlocked multiplier for overclocking.

The device manager and computer properties window of the Doom demo PC at CES 2017.

This is one of the several 8 core models that are expected to appear in the upcoming months. We have seen an 8 core model clocked at 3.6 GHz base and 3.9 GHz boost being demoed at CES 2017. That specific model had the “1D3601A2M88F3_39/36_N” codename. Revision was labeled as F3 while the 8 core model in the benchmarks has a newer revision of F4. Assuming that XFR (Extended Frequency Range) runs as it is intended, these chips would have no problem reaching 4 GHz+ under good cooling conditions.

The third 8 core model is the "ZD3601BAM88F4_40/36_Y" which is the highest clocked model with base clock of 3.6 GHz and boost clock of 4.0 GHz. This is the highest clocked model we have seen so far under the F3 revision, which operates at factory shipped speeds up to 4.0 GHz and beyond that with XFR.

AMD Ryzen 6 Core Model With Up To 3.7 GHz Boost Clocks

Next up, we have the chip which has been discussed by many in the last few days. The 6 core variant was said to be excluded from the lineup but that doesn't seems to be the case. The AMD Ryzen 6 core model is real and comes with SMT enabled which makes up 12 threads. The chip has the "ZD3301BBM6IF4_37/33_Y" codename and just like the 8 core model, is a close to final version. This chip also comes in the F4 revision which is later than the CES 2017 demo variants. Those models were also ES "Engineering Samples".

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The chip should feature up to 12 MB of L3 cache. Clock speeds are rated at 3.3 GHz base and 3.7 GHz boost. It should boost beyond the mentioned clocks under adequate cooling hardware. There's no word on the TDP but it should be within the 95W TDP range. The chip will also support overclocking since all Ryzen models will come with an unlocked multiplier. Note that this could be the base 6 core model and there could be even faster models added to the lineup at launch.

A tweet by Canard PC Hardware also confirms that at least one 6 core model is being internally tested by AMD. The specifications of this chip match the ones reported by Videocardz. IO-Tech has also confirmed through their sources that it is entirely possible to create 6 core models from the base Zen die. An illustration of a 6 Core CPU block diagram is provided below:

WCCFtechAMD NaplesAMD Summit Ridge
Zen Cores328
L1 Instruction Cache32 KB x 3232 KB x 8
L1 Data Cache64 KB x 3264 KB x 8
L2 Cache512 KB x 32512 KB x 8
L3 Cache64 MB16 MB
Base Clock1.4GhzUp To 3.6 GHz
Turbo Clock2.8GhzUp To 4.0 GHz

AMD ZEN CPU Architecture and X370 AM4 Platform Details Highlighted

AMD Ryzen processors will feature up to 8 cores and 16 threads with the Zen architecture. The processors will deliver up to 40% IPC gains and great performance increases over Bulldozer CPUs. All Ryzen processors come with new boost technology that are part of the SenseMI feature set. The Ryzen processors also feature a fully unlocked multiplier across several variants which would support overclocking on the new AM4 motherboards. If you would like more details about the Zen architecture, here's the link.

AMD SenseMI Technology:

  • Pure Power – more than 100 embedded sensors with accuracy to the millivolt, milliwatt, and single degree level of temperature enable optimal voltage, clock frequency, and operating mode with minimal energy consumption;
  • Precision Boost – smart logic that monitors integrated sensors and optimizes clock speeds, in increments as small as 25MHz, at up to a thousand times a second;
  • Extended Frequency Range (XFR) – when the system senses added cooling capability, XFR raises the Precision Boost frequency to enhance performance;
  • Neural Net Prediction – an artificial intelligence neural network that learns to predict what future pathway an application will take based on past runs;
  • Smart Prefetch – sophisticated learning algorithms that track software behavior to anticipate the needs of an application and prepare the data in advance.

AMD X370 Platform Specs:

As for the platform itself, AM4 X370 will be top of the line. Aside from the budget friendly B350 and A320 chips, the X370 PCH will offer increase PCIe lanes and increased storage / connectivity features. AMD has planned a total of 16 new AM4 motherboards which will be available at launch through their partners. The boards are detailed in our post here.

The AMD Ryzen lineup will also feature quad core variants with eight threads but details about them aren't available at the moment. The expected arrival date of Ryzen processors and the AM4 platform is Q1 2017, around February - March so it shouldn't take long for performance numbers to show up.