AMD has always promised that Zen is a core suitable for entry level x86 computers all the way up to high-performance server parts. Within that scale so far, AMD has launched EPYC for servers, Ryzen 7 for high-end desktop and Ryzen 5 for mainstream consumers. All that is left is Threadripper for super-high-end desktops, coming in August, Zen paired with graphics, coming in Q3/Q4, and Ryzen 3 for entry level desktops, being launched today. The two entry level parts are quad core Zen CPUs, targeting the $109 to $129 boundary and offering four full x86 cores for the same price Intel offers two cores with hyperthreading.

Putting Zen on a Scale

Designing a core that scales from entry level to graphics to laptops to desktop and up to server is very difficult. You need a design that is very power efficient at the low end of the spectrum, but can push with enough grunt at the very top. When you design a core for each of those specific markets, there are tradeoffs you can make – features for one might not be needed on the other and vice versa. Then add in to the mix thinks like die-size, which will directly affect the cost of the products, and the need to remain price competitive is also an issue. Beyond the core design, there has to be sufficient memory bandwidth and IO for all the processors being made. Having a one-core-fits-all approach is tough.

However AMD seems to have pulled it off, going so far as using one silicon die design for everything aside from graphics. The Zen core has shown itself to be a big upswing in performance compared to AMD’s previous generation microarchitecture, and positioned at a price and performance competitive level at almost every stage of its so far. EPYC competes against Skylake-SP Xeons in important benchmarks, Ryzen 7 takes on Intel’s HEDT at half the cost, and Ryzen 5 offers a 3:1 ratio on thread count against the Core i5s at a similar price.

We’ve tested all three, in our reviews listed below:

We also interviewed AMD’s CEO, Lisa Su, as the first Zen products launched:

So far all the products launched with Zen have aimed at the upper echelons of the PC market, covering mainstream, enthusiasts and enterprise customers – areas with high average selling prices to which a significant number of column inches are written. But the volume segment, key for metrics such as market share, are in the entry level products. So far the AMD Zen core, and the octo-core Zeppelin silicon design, has been battling on the high-end. With Ryzen 3, it comes to play in the budget market.

Zen Zen Zen-Gören Eriksson

The two Ryzen 3 CPUs being launched today, worldwide, are the Ryzen 3 1300X and the Ryzen 3 1200. The base specifications for the Ryzen stack now look as follows:

AMD Ryzen SKUs
  Cores/
Threads
Base/
Turbo
XFR L3 TDP Retail
7/27
Cooler
Ryzen 7 1800X 8/16 3.6/4.0 +100 16 MB 95 W $419 -
Ryzen 7 1700X 8/16 3.4/3.8 +100 16 MB 95 W $299 -
Ryzen 7 1700 8/16 3.0/3.7 +50 16 MB 65 W $279 Spire
RGB
Ryzen 5 1600X 6/12 3.6/4.0 +100 16 MB 95 W $229 -
Ryzen 5 1600 6/12 3.2/3.6 +100 16 MB 65 W $209 Spire
Ryzen 5 1500X 4/8 3.5/3.7 +200 16 MB 65 W $189 Spire
Ryzen 5 1400 4/8 3.2/3.4 +50 8 MB 65 W $159 Stealth
Ryzen 3 1300X 4/4 3.5/3.7 +200 8 MB 65 W $129 Stealth
Ryzen 3 1200 4/4 3.1/3.4 +50 8 MB 65 W $109 Stealth

The Ryzen 3 1300X is a cut version of the Ryzen 5 1500X, featuring the same frequencies and the same +200 MHz of XFR, but no simultaneous multithreading and half of the L3 with 8MB of L3 cache. That difference is still worth a third of the price, with the 1500X at $189 MSRP and the 1300X at $129 MSRP.

The Ryzen 3 1200 brings up the rear of the stack, being the lowest CPU in the stack, having the lowest frequency at 3.1G base, 3.4G turbo, 3.1G all-core turbo, no hyperthreading and the lowest amount of L3 cache. For the troubles comes the lowest price as well at $109, and should be bundled with the Wraith Stealth cooler (as is the 1300X).

Both processors are unlocked, allowing for full overclocking on B350 and X370 motherboards. Given some preliminary numbers for a future review, both CPUs seem to be capable of marching on towards 3.9-4.0 GHz fairly easily. AMD promotes both of the Ryzen 3 CPUs as being part of their 'VR Ready' line, compared with the premium line consisting of the Ryzen 7 parts and all but one of the Ryzen 5s.

As mentioned above, AMD is using the same 8-core Zeppelin silicon design as the Ryzen 5 and Ryzen 7 processors, as well as the EPYC server processors and the upcoming Threadripper CPUs. This is done for a few reasons, but namely cost and binning: to design a new set of masks on GlobalFoundries 14nm process is many tens of millions of dollars – if the performance of a unified design is sufficient to meet the targets, then it’s a go. On the binning side, one could argue that these were the processors on the stack that didn’t make the cut for the Ryzen 5 or Ryzen 7 parts, and by selling them cheap (but still reliable), AMD’s effective yield for the process increases and less money is thrown away.

In order to facilitate a quad core design from the eight core chip, four cores are disabled. As discussed in previous articles, AMD’s Zeppelin design consists of two core clusters (two CCXs) of four cores each, connected internally via AMD’s Infinity Fabric.

In order to get down to four cores from eight, AMD has two possible solutions each with their pros and cons:

  1. Cut off one CCX, and leave one CCX available (4+0)
  2. Disable two cores per CCX, leaving two cores per CCX (2+2)
  3. Disable one core in one CCX, and three cores in the other CCX (1+3)

Number 3 leads to a lop-sided silicon die, and obviously wasn’t chosen.

With Number 1, leaving one CCX, this has positives in making sure that communication between each of the cores was the same, making performance consistency more predictable and less discussion about a non-uniform memory access design within the silicon. The downside is that if the silicon is binned lower because of a potential defect, there only has to be one defect in a CCX to make the whole thing unusable – get one in each CCX and it becomes useless reformed sand. Another downside is thermal performance: having four high performing cores next to each other will put strains on power consumption and heat, and ideally any silicon not in use electrically should be taken advantage of thermally to dissipate heat. There could also be another disadvantage, depending on how much IO is tied to a CCX for communication bandwidth – with only one path through to the DRAM controller, this could limit data flow per core.

With Number 2, the main advantage is going to be with thermals – with two CCXes in play with some silicon between them, the chip can run cores on opposite ends at a much higher power each without affecting each other as much, leading to potentially higher performance. The downside is core-to-core latency, as the CPU would have extended latency between neighboring cores and those in the different CCX, and it goes back to the non-uniform memory access argument with the Ryzen 7 CPUs.

AMD decided to go with the 2+2 arrangement for the quad core Ryzen parts, following on from the 3+3 arrangement on the hex-core Ryzen 5 CPUs.

Competition and Market

Both Intel and AMD are comparable on platform price, where B250 and B350 motherboards respectively cost around the same. The big upswing for AMD here is going to be overclocking, and potentially push the Ryzen 3 CPUs through to compete with the next one up the stack depending on stock performance. By contrast Intel’s performance is going to be static, and Intel might argue that for entry level products, overclocking is rarely a consideration for the bulk and volume purchasing agreements at this level. Intel also has a slight advantage in having some integrated graphics, negating the need for a discrete GPU.

There are two ways to approach analyzing the competition: configuration and price. For configuration, Ryzen 3 are quad-core CPUs without simultaneous multithreading, which would put them up against the Core i5 CPUs, which range from $182 to $239. Comparing on price, the Ryzen 3 1300X at $129 fits between the Core i3-7100 ($109) and Core i3-7300 ($149).

Comparison: AMD Ryzen 3 1300X
Features Intel
Core i3-7100
AMD
Ryzen 3 1300X
Intel
Core i3-7300
Platform Z270, B250 X370, B350, A320 Z270, B250
Socket LGA1151 AM4 LGA1151
Cores/Threads 2 / 4 4 / 4 2 / 4
Base/Turbo/XFR 3.9 GHz 3.4 / 3.7 / 3.9 GHz 4.0 GHz
GPU PCIe 3.0 x16 x16 x16
L2 Cache 256 KB/core 512 KB/core 256 KB/core
L3 Cache 3 MB 8 MB 4 MB
TDP 51W 65W 51W
Retail Price (7/28) $115 $129 $149

The Ryzen 3 1200 at $109 has the Core i3-7100 ($109) at the top end and the G4620 ($99) underneath. Intel would point out that the G4560 at $64 is also in play, and almost half the price.

Comparison: AMD Ryzen 3 1200
Features Intel
Pentium G4560
Intel
Pentium G4620
AMD
Ryzen 3 1200
Intel
Core i3-7100
Platform 200-series 200-series 300-series 200-series
Socket LGA 1151 LGA1151 AM4 LGA1151
Cores/Threads 2 / 4 2 / 4 4 / 4 2 / 4
Base/Turbo 3.5 GHz 3.7 GHz 3.1 / 3.4 GHz 3.9 GHz
GPU PCIe 3.0 x16 x16 x16 x16
L2 Cache 256 KB/core 256 KB/core 512 KB/core 256 KB/core
L3 Cache 3 MB 3 MB 8 MB 3 MB
TDP 54 W 51W 65W 51W
Retail (7/28) $80 $105 $109 $115

 

Additional Notes On This Review

We are in the process of updating our AMD Ryzen 7 and Ryzen 5 results with the new AGESA 1006, and aim to have an article out soon comparing the two. At the time of this review, only the Ryzen 3 1200, Ryzen 3 1300X and Ryzen 5 1500X have been retested, due to time restraints of travel and other projects. In due course, all will be retested and examined.

Also due to time, as this review is being published, more benchmark results are coming in. Graphs will be added as this happens.

Pages In This Review

Test Bed and Setup
POST A COMMENT

140 Comments

View All Comments

  • Ian Cutress - Thursday, July 27, 2017 - link

    AMD doesn't use the R3 / R5 / R7 nomenclature - that's for graphics. Reply
  • Gothmoth - Thursday, July 27, 2017 - link

    i don´t care about gaming or heating my house with a cpu..... so ryzen makes more sense for me. :)

    x299 was such a disappointment.
    Reply
  • MrCommunistGen - Thursday, July 27, 2017 - link

    Ian, first off, thanks for the benchmark numbers! I look forward to seeing the rest once they are completed.

    As far as data is concerned, is there a chance that the DigiCortex results have the wrong numbers next to a couple CPUs?

    I'm specifically looking at the i3 7100 being the fastest Intel CPU at 0.63, compared to the rest of the offerings clustering together at 0.37-0.38. To me it looks like the 0.63 should be the i5 7400 and the 7100 should be with the other dual cores.

    On another note, it looks like the RoTR Geothermal Valley scene really HATES AMD's HyperThreading - at least on Nvidia hardware/drivers. At first I thought there might be another set of numbers transposed somewhere since the Ryzen 3 CPUs perform SO MUCH better than the 1500X. But I looked back at the 1600X review and the numbers seem consistent -- bad performance on HyperThreaded AMD on a GTX 1080. Prophet's Tomb seems to behave better. Just shows how much architecture and software optimizations for said architecture can either oppose or compliment each other.

    As for small typos, there's also a couple spots where the 1200 is referred to as "1200X". There was another one I found during my initial read that I can't find now that I'm commenting.
    Reply
  • MrCommunistGen - Thursday, July 27, 2017 - link

    Not the typo I was looking for, but I just noticed that the intro/description for Civ6 looks like it has a typo I've missed in previous articles:
    "...but every edition from the second to the sixth, including the fifth as voiced by the late Leonard Nimoy, it a game that is easy to pick up, but hard to master."

    "it a game" should probably be "is a game"

    Not a criticism, just trying to help out where I can. :)
    Reply
  • MrCommunistGen - Thursday, July 27, 2017 - link

    Gah... brain fart this morning. Please read my references to AMD "HyperThreading" as "SMT"... smh Reply
  • Ian Cutress - Thursday, July 27, 2017 - link

    i3 7100 should be 0.363x on DigiCortex. I've corrected three 7100 results today in our database from my personal master copy. I think I'll have to go through them all and double check.

    RoTR Geothermal on 1080p with a GTX 1080 really loves quad cores without hyperthreading, AMD or Intel. I'm not sure what it is with that test on that benchmark - in our KBL-X review, all the i5s got top results by a good margin. I think it's been optimized specifically for quad-core, or there's something iffy in the game code/drivers.

    Appreciate the typo point outs for sure. These things are always last minute and you can never have too many eyes on it. :)
    Reply
  • DanGer1 - Thursday, July 27, 2017 - link

    The review is lacking, especially the value charts. Ryzens come with a cooler, their motherboards cost less and they are overclock-able. Adjusting the cost for the motherboard and the cooler changes the value charts significantly in R3's favor. Overclocking on stock air makes makes performance and value a no contest in favor of the R3s. Reply
  • MajGenRelativity - Thursday, July 27, 2017 - link

    Intel's processors also come with a cooler. Reply
  • wallysb01 - Thursday, July 27, 2017 - link

    Basic 1511 boards that would go into i3/Pentium builds are really not much more, if at all, than the lower end AM4 boards. Plus, the Intel stuff has an iGPU and if you're buying a low end desktop, you probably don't care a lot about heavily multithreaded workloads. So, I'd actually argue the i3/Pentiums are getting under sold in the value charts.

    Its kinda funny how the landscape has switched, in that Intel might actually be the better low-end, value winner, while AMD is the best mid/mid-high end value winner.
    Reply
  • Gothmoth - Thursday, July 27, 2017 - link

    +1 for overclocking.
    the tested intel cpus are sure not k models.

    as for intel having internal GPU.. i never used them not even on my cheapest system builds.
    Reply

Log in

Don't have an account? Sign up now