While AMD’s FX-9590 CPU has been in systems for over a year, it suddenly comes to market as a retail package for end-users to buy with a bundled liquid cooling system. This 220W CPU that has a turbo speed of 5.0 GHz still sits at the top of AMD’s performance stack, despite subsequent improvements in the architecture since. We have decided to grab ASRock’s 990FX Extreme9 and an FX-9590 for a review to see if it still is the AMD performance CPU champion.

Spot the CPU

The story behind AMD’s fastest ever x86 CPUs is slightly odd. Two models, the FX-9590 and FX-9370, were both launched into OEM channels in June 2013. Being an OEM component, the only way to get one was in a pre-built system through a retailer, or through a bulk system integrator that had a model around one of these CPUs. Typically this is a process that is only exhibited with server class processors: from a range of CPUs being produced, only several will be available for end-users at retail because server CPUs usually go through a system builder. At the time, it seemed that AMD concerned that the high TDP of this CPU, at 220W listed, is too much for most cooling setups within a home user system and the best way to get it to consumers would be if a system builder chose the appropriate cooling for them.

As a result of this orientation of sales, AMD did not sample the media with review units. We review an AMD product typically though an AMD sourced sample. It was also noted that the OEM price for the CPU was near $900 for the FX-9590, which seemed like an excruciating amount for what was essentially a good overclocking version of the FX-8350. Several media websites were able to collaborate with system builders in order to get a chance to review the CPU, and AMD was confident in their promotion and handling of the new CPU.

Anecdotally, in my field of vision, the promotion of this CPU was relatively limited. The price was the main factor, resulting in comparative AMD/Intel systems being more power hungry on the AMD side, and substantially more expensive when put up against the latest mainstream i7 at the time. As a result, while some retailers were selling the OEM CPU at full price, some retailers decided to sell their OEM stock with a severe price cut directly to consumers, down from $900 to $390, in order to get rid of units (this is when I picked up our sample).

Due to the OEM nature of these sales to end-users, each CPU had either no warranty with AMD or a limited warranty. For the user interested in a 3-year system cycle without the fear of a bad egg, the OEM route is never a positive one.

AMD subsequently released, relatively silently, a proper package and retail version of the FX processors. It was apparent that this was in response to the OEM sales, with the retailers list ‘heatsink and fan not included’ alongside the specifications.

AMD FX CPU Comparison
Release Date April
October 2012 October 2012 October 2012 June 2013 June 2013
Modules 2 3 4
L1 Cache (Code) 128 KB 192 KB 256 KB
L1 Cache (Data) 64 KB 96 KB 128 KB
L2 Cache 4 MB 6 MB 8 MB
L3 Cache 8 MB
TDP 125W 220 W
Base Frequency 4200 3900 3500 4000 4400 4700
Turbo Frequency 4300 4200 4000 4200 4700 5000
Core Name Vishera
Microarchitecture Piledriver
Socket AM3+
Memory Support DDR3-1866
Price (US) $140 $140 $160 $190 $230 
$300 CLC
$370 CLC

Since that release, AMD has not upgraded their enthusiast processor line with the latest architecture. The FX line has stayed where it is, perhaps for a number of reasons. One could speculate that releasing the next generation of FX-85xx might put them behind the FX-9590 in performance, or that the fabrication process was not suitable for a quad-module CPU with the new architecture improvements. The FX line for desktops, as far as we know, is staying at 32nm with no improvements.

Now Available

Fast forward twelve months to June 20th 2014 and Roy Taylor, AMD’s VP of Global Channel Sales tweets this innocuous picture:

Speculation was rife as to what this was. Here is a large box for an FX processor with the words ‘with Liquid Cooling System’ underneath. AMD supplied liquid cooling to the media when we reviewed the FX-8350 CPUs, the main CPU that sits underneath the FX-9590 and FX-9370, so there was an expectation that was something new.

On June 26th, the @AMDFX twitter account posted the following, confirming that this was the older FX-9590 but in a retail box with retail cooling:

The AMD FX Processor page has been updated accordingly, showing the same render of the new box. Here we see that the liquid cooler is supplied by Cooler Master, and uses a wide range PWM fan as part of the package.

Of course, this leaves several questions unanswered: how much, when is it on sale, where is it on sale, and is it still any good?  Well for the US at least, it is on sale today from Newegg at $370 with the water cooling kit, or $330 without. NCIX has it listed for CAD$500, although this is currently in ‘back stock’ mode.

The SKU to look for is the FD9590FHHKWOX, which in the UK does not seem to be on the shelves as of yet. Amusingly, when this is typed in to Google, the search engine asked me if I meant FD9590FHHKWOF, the non-CLC version.

This Review

Back when the FX-9590 was originally released alongside the FX-9370, we were unable to secure a sample from AMD and the limited availability made us feel the CPU had a fairly limited scope for testing. However, now the landscape has changed. There has been no new FX CPUs on the market from AMD, and this subsequent release of a retail version piques the interest as to how relevant AMD still sees their high-frequency part. Because I now have a FX-9590 all of my own to test from when the OEM stock was sold, I felt it was worth revisiting to see if it can be considered an investment.

Alongside testing this CPU, the 220W TDP requires a substantial motherboard to match. Due to the age of the platform, the AM3+ socket and the old 990FX chipset, finding a motherboard can be rather tricky. Many of the AM3+ motherboards that were launched were only suited for the FX-8350 processors, which had a 125W TDP. This is yet another reason that AMD wanted the FX-9590 in the hands of system builders who would chose high end motherboards that could cope.

Two of the newest motherboards to be released for 990FX were the ASRock 990FX Killer and the ASRock 990FX Extreme9. We reported the release of the Killer in December 2013, but the Killer is unsuitable here as the specification sheet lists processors up to 125W only. The Extreme9 is ASRock’s high-end AM3+ motherboard, and more suited to the task. Luckily I had requested a sample almost a year ago for some regression testing, so we will be reviewing this motherboard as part of this article. 

ASRock 990FX Extreme9 Overview, Visual Inspection, Board Features


View All Comments

  • TiGr1982 - Saturday, August 09, 2014 - link

    "2 or 3 core-pairs Add 3 CU support."
    But there is no 3 "core-pair" (3 CU, 3 modules) Kaveri APUs on the market - at least, as of yet.
  • TiGr1982 - Saturday, August 09, 2014 - link

    No, no FX in the future - at least, not on Bulldozer-derived microarchitectures.
    Just APUs till 2016 at least.
  • will1956 - Saturday, August 09, 2014 - link

    i've gotten the sabertooth 990FX GEN3 R2.0 and its got pcie 3 x16 with a 8350 and a sapphire 7870 ghz (both OC'ed) and its pretty good although rather greedy Reply
  • TiGr1982 - Saturday, August 09, 2014 - link

    It's nice that this kind of boards exist, but, sadly, PCI Express 3.0 is a rarity rather than a norm on AM3+.
    AMD only has PCI Express 3.0 as a standard on FM2+ with Kaveri APU.
  • roadapathy - Saturday, August 09, 2014 - link

    I see by the comments below that I'm among the rational. AMD is stuck on the 32nm fab process making for a dismal performance experience for us all! My AMD 6-core could boil water. This is great for the cold midwestern American climate but the Summer is unbearable with AMD CPUs. I had waited over 2 years for a 22nm AMD 8 core FX that never appeared. Meanwhile, I'm running the "lower" 95watt CPU. I can't even imagine how it would be with the 220watt. How ridiculous!! Reply
  • RussianSensation - Sunday, August 10, 2014 - link

    Exactly!! Someone understands. If AMD could move to 14nm, they could increase the number of modules 50%-100% and lower the power usage at the same time. When you CPU is on 32nm while Intel is soon to launch 14nm Broadwell, the chance of AMD competing in performance or performance/watt is 0%. Reply
  • Death666Angel - Sunday, August 10, 2014 - link

    But more cores aren't really the issue for AMD, are they? In multi-threaded stuff they are already doing fine. What they need is better IPC. Even at 5GHz they barely beat i3s of the current generation. Unfortunately the FX-9590 isn't in bench yet, but the FX-8350 even loses to a chip on 32nm (i5-2500k) in most benchmarks except some multi threaded ones. Put an i7-2600k in its place and it loses even more consistently. That is not just a lithography disadvantage, that is a straight up embarrassment from the CPU architecture standpoint. And the fact that they aren't releasing any more FX CPUs based on newer architectures is a slap in the face of any PC enthusiast. Reply
  • TiGr1982 - Monday, August 11, 2014 - link

    Indeed; placed my response too. Reply
  • Budburnicus - Wednesday, January 14, 2015 - link

    exactly! AMD has HORRIBLE IPC which results in horrible efficiency - ALSO bear in mind that the 3 year old i5 and i7 parts are 32nm fab, and are 95 watt TDP parts - which can easily be clocked at 4.7 Ghz and totally SPANK this CPU in every way!

    AMD need a totally new architecture to go with a new fabrication, otherwise it will remain meaningless and eat more power. IPC is incredibly important - just because this FX 9590 is much newer than an i7-2600K and therefore has more and newer instruction sets, does NOT mean it performs better! It performs far worse in fact - whilst eating more power - using the same fab size!
  • TiGr1982 - Monday, August 11, 2014 - link

    It's not the manufacturing tech itself - their Bulldozer-derived microarchitecture has drastically slower IPC (Instructions Per Clock). If you you emphasize lithography, then let's compare FX Piledriver from late 2012 on GF 32 nm lithography and Sandy Bridge LGA1155 Core i7 from early 2011 on Intel's 32 nm lithography.
    Guess what? Sandy Bridge is around 50% faster in single threaded tasks than Pilderiver. At the "same" lithography. Despite the fact that Sandy Bridge i7 has just 9 MB L2+L3 cache, while Piledriver has 16 MB L2+L3 cache. So, AMD's chip has almost twice the amount of cache than Intel's chip and is still 50% slower. So, first, the case with AMD FX is mainly a problem of inappropriate microarchitecture, and only then comes the lithography lag.

    So, even if a Cinderella's fairy comes up and magically moves FX Piledriver to Intel's 22 nm or even 14 nm, the resulting tiny Piledriver shrink will still be a Slowpoke in single thread duties - because it is its microarchitecture that prevents it from doing better.

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