Tech preview: Threadripper 1900X - 1920X & 1950X

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A bit more on Threadripper caches + Lineup

Up-to 40 MB L2+L3 Cache

The caches; all parts are based on the same architecture, anything Ryzen. And considering there is 20 MB for an 8-core processor for the L2 and L3 cache, that can be multiplied by two and thus is 40MB of cache.
  

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One core out of the sixteen available

The 16-core part with four four-core CCX units aka Summit Ridge aka RYZEN in the end get a per core L1 data cache size of 32 KiB, a L1 instruction cache size of 64 KiB and then a L2 cache size of 512 KiB per core.

  • L1 16 x 32 Kb Data
  • L1 16 x 64 Kb Instruction
  • L2 16 x 512 Kbytes
  • L3 4 x 8 Mbytes L3

The 12-core part with four-core CCX units aka Summit Ridge aka RYZEN in the end get a per core L1 data cache size of 32 KiB, a L1 instruction cache size of 64 KiB and then a L2 cache size of 512 KiB per core.

  • L1 12 x 32 Kb Data
  • L1 12 x 64 Kb Instruction
  • L2 12 x 512 Kbytes
  • L3 4 x 8 Mbytes L3

The 8-core part with two four-core CCX units aka Summit Ridge aka RYZEN in the end get a L1 data cache size of 32 KiB, a L1 instruction cache size of 64 KiB and then a L2 cache size of 512 KiB per core.

  • L1 8 x 32 Kb Data
  • L1 8 x 64 Kb Instruction
  • L2 8 x 512 Kbytes
  • L3 2 x 8 Mbytes L3

The L3 cache remains an open bigger pool at 8 Mbytes per CCX cluster. Again, one Core Complex Unit holds four processor cores. The processor has quad channel DDR4 support, AVX2, AES, FMA3, AMD-V SSE 4.1 and 4.2 instruction sets etc. The bus frequency is 100 MHz multiplied by whatever the processor fires off at it. Ryzen Threadripper is built with a 14nm FinFET fab node, this greatly helps where AMD is with the performance and power consumption.

The Technology Inside the processor

AMD implemented technology that will make sure that this processor runs applications efficiently and optimized. SenseMI is a set of sensing and adaptive technologies, including an artificial network inside every “Ryzen” series processor to anticipate future decisions, preload instructions, and choose the best path through the CPU. AMD is also introducing a new interconnect called AMD Infinity Fabric. This is a new and fast way of connecting various parts within an SoC. Infinity Fabric is not just used in the the Ryzen generation processors, it is also found in future (Vega) AMD GPUs and (almost) all other AMD chips in the near future. Infinity Fabric allows for faster and better secure connections within a chip. The inter- and intra-chip connector will be standardized and used in many AMD products and, as such, AMD can easily communicate over that very same interconnect. SenseMI technology then; it is based on five parts as shown in the slide below. Pure Power is a technology that allows the Ryzen chips and other Ryzen variants to work as efficiently as possible. 

The many core mega-tasking processor line-up

  • The flagship processor is the Ryzen Threadripper 1950X, a 16-core product that will get a 3.4 GHz base frequency with the ability to precision boost to 4.0 GHz (!). These processors are SMT, thus ‘hyper-threaded’ towards 32 threads. This processor will retail for 999 USD.
  • The Ryzen Threadripper 1920X is the 12-core product, the base clock is a notch higher at 3.5 GHz with precision boost to 4.0 GHz, thus SKU will get 24 threads. This processor will retail for 799 USD. 
  • Ryzen Threadripper 1900X is being introduced as well. This is an 8 cores 16 threads, 3.8 base frequency and 4.0 GHz boost. $549 obviously since it is on the X399 platform it is benefiting from quad channel memory as well as the 64-pcie lanes. There will be 20 LCS options.

For a availability date the story goes like this: Aug 10th the 16 and 12 core processors will be available worldwide. The 8-core version will be released slightly later on August 31st. July 31st pre-orders will start for anything related with Threadripper including a wide diversity of X399 motherboards.

Now I can go all in-depth with details and specs, but I simply placed the primary specs into the table below so you can easily spot what you may expect in the now diverse and wide Ryzen processor line-up. Being part of the Ryzen family, Threadripper processors are just that CPUs based upon Ryzen architecture. While a lot of IO changes have been made to facilitate it, basically on-die you'll spot (well four actually) but with two 8-core Ryzen processors activated, much like the Ryzen 7 1800X has two CCxes with each four cores. This means that Ryzen Threadripper processors have four CCXes, two (and this is alittle arbitrary) 8-core untis per die. 

When we go all the way back towards one CCX, each of them have 4-cores enabled. For the twelve-core parts that means per 4-core cluster (CCX) one core is disabled and that means these processors seem to be set up in a 6+6 fashion (though this has not been confirmed just yet). Other than that, again, these are physically similar to the 8-core Summit Ridge / Ryzen design. That also invokes corresponding caches. And before you ask, yes, Threadripper processors are all SMT threaded (acronym is Hyper-threading) and yes, you get that sweet unlocked multiplier as well. The Ryzen Threadripper series has a confirmed 180W TDP rating, much like what was speculated. On the market you will spot Ryzen series 3, 5, 7 and now Threadripper processors. It’s plain and simple and, as always, that works out the best to understand product positioning compared to the Intel line-up.

Ryzen Threadripper will have to battle Intel's new Core i9 (Skylake-X) models that run from 10 to 18 cores with prices running up-towards 2K USD. AMD launched Ryzen with three primary 8-core models initially, followed by six and four-core models. The Ryzen Threadripper series processors are eight, twelve or sixteen core processors at very competitive pricing. 
 

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Processor model

Cores/Threads

L3 Cache

TDP

Base

Turbo

Unlocked

Price

AMD Ryzen Threadripper 1950X

16/32

32 MB

180 W

3.4 GHz

4.0 GHz

Yes

$999

AMD Ryzen Threadripper 1920X

12/24

32 MB

180 W

3.5 GHz

4.0 GHz

Yes

$799

AMD Ryzen Threadripper 1900X

8/16

32 MB

180 W

3.8 GHz

4.0 Ghz

Yes

$549

AMD Ryzen 7 1800X

8/16

16 MB

95 W

3.6 GHz

4.0 GHz

Yes

$499

AMD Ryzen 7 1700X

8/16

16 MB

95 W

3.4 GHz

3.8 GHz

Yes

$399

AMD Ryzen 7 1700

8/16

16 MB

65 W

3.0 GHz

3.7 GHz

Yes

$329

AMD Ryzen 5 1600X

6/12

16 MB

95 W

3.6 GHz

4.0 GHz

Yes

$249

AMD Ryzen 5 1600

6/12

16 MB

65 W

3.2 GHz

3.6 GHz

Yes

$219

AMD Ryzen 5 1500X

4/8

16 MB

65 W

3.5 GHz

3.7 GHz

Yes

$189

AMD Ryzen 5 1400

4/8

8 MB

65 W

3.2 GHz

3.4 GHz

Yes

$169

AMD Ryzen 3 1300X

4/4

8 MB

65 W

3.4 GHz

3.7 GHz

Yes

$129

AMD Ryzen 3 1200

4/4

8 MB

65 W

3.1 GHz

3.4 GHz

Yes

$109


When AMD released Ryzen, all of the sudden there where announcements in their server segment, Naples with up-to a staggering 32 processor cores. And from there onwards, rumors flooded the web. Later in March the first design block diagrams surfaced on the web, indicating that AMD was working on a many-core processor, but one that was to be released to the consumer market, as these diagrams showed an ASUS label. Shortly thereafter the first official announcements where made, AMD would be releasing what we now know to be the X399 chipset platform for motherboards, to be paired with Ryzen Threadripper processors. 

You already have seen a number of X399 motherboard announcements, and it is no secret that  processors will initially be released in the HEDT (High-End Desktop) segment. Available starting August 10th 2017 and AMD will initially release two models: a 16-core, 32-thread model and a 12-core, 24-threaded model, followed shortly by that 8-core SKU offering you quad-channel memory and 64 lanes of PCIe gen 3.0. That memory will run the same clock as the infinity fabric.

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