Subject: Processors | April 30, 2013 - 02:04 PM | Josh Walrath
Tagged: amd, FX, vishera, bulldozer, FX-6350, FX-4350, FX-6300, FX-4300, 32 nm, SOI, Beloved
Today AMD has released two new processors that address the AM3+ market. The FX-6350 and FX-4350 are two new refreshes of the quad and hex core lineup of processors. Currently the FX-8350 is still the fastest of the breed, and there is no update for that particular number yet. This is not necessarily a bad thing, but there are those of us who are still awaiting the arrival of the rumored “Centurion”.
These parts are 125 watt TDP units, which are up from their 95 watt predecessors. The FX-6350 runs at 3.9 GHz with a 4.2 GHz boost clock. This is up 300 MHz stock and 100 MHz boost from the previous 95 watt FX-6300. The FX-4350 runs at 3.9 GHz with a 4.3 GHz boost clock. This is 100 MHz stock and 300 MHz boost above that of the FX-4300. What is of greater interest here is that the L3 cache goes from 4 MB on the 4300 to 8 MB on the 4350. This little fact looks to be the reason why the FX-4350 is now a 125 watt TDP part.
It has been some two years since AMD started shipping 32 nm PD-SOI/HKMG products to the market, and it certainly seems as though spinning off GLOBALFOUNDRIES has essentially stopped the push to implement new features into a process node throughout the years. As many may remember, AMD was somewhat famous for injecting new process technology into current nodes to improve performance, yields, and power characteristics in “baby steps” type fashion instead of leaving the node as is and making a huge jump with the next node. Vishera has been out for some 7 months now and we have not really seen any major improvement in regards to performance and power characteristics. I am sure that yields and bins have improved, but the bottom line is that this is only a minor refresh and AMD raised TDPs to 125 watts for these particular parts.
The FX-6350 is again a three module part containing six cores. Each module features 2 MB of L2 cache for a total of 6 MB L2 and the entire chip features 8 MB of L3 cache. The FX-4350 is a two module chip with four cores. The modules again feature the same 2 MB of L2 cache for a total of 4 MB active on the chip with the above mentioned 8 MB of L3 cache that is double what the FX-4300 featured.
Perhaps soon we will see updates on FM2 with the Richland series of desktop processors, but for now this refresh is all AMD has at the moment. These are nice upgrades to the line. The FX-6350 does cost the same as the FX-6300, but the thinking behind that is that the 6300 is more “energy efficient”. We have seen in the past that AMD (and Intel for that matter) does put a premium on lower wattage parts in a lineup. The FX-4350 is $10 more expensive than the 4300. It looks as though the FX-6350 is in stock at multiple outlets but the 4350 has yet to show up.
These will fit in any modern AM3+ motherboard with the latest BIOS installed. While not an incredibly exciting release from AMD, it at least shows that they continue to address their primary markets. AMD is in a very interesting place, and it looks like Rory Read is busy getting the house in order. Now we just have to see if they can curve back their cost structure enough to make the company more financially stable. Indications are good so far, but AMD has a long ways to go. But hey, at least according to AMD the FX series is beloved!
Subject: Processors | October 23, 2012 - 02:44 PM | Jeremy Hellstrom
Tagged: vishera, Steamroller, piledriver, FX-8350, fx-8150, FX-6300, FX-6200, bulldozer, amd
The FX-8350 Vishera processor from AMD has finally arrived with 8 fully unlocked cores of polished Piledriver processing power. With Piledriver there are no huge changes to the existing Bulldozer architecture, this is more of a polishing and optimizing the existing architecture and [H]ard|OCP's testing bears that out. While faster than the previous generation FX-8150 it still lags behind Intel's Ivy Bridge processors, disappointing but certainly expected. The unlocked cores do lend themselves somewhat to overclocking, with [H] hitting a stable 4.6GHz with all cores enabled, a 10% jump in frequency. At that speed it does better when competing with Intel's offerings, until you overclock them as well at which point the comparative performance suffers somewhat.
Make sure to catch Josh's review, covering both the 8 core FX-8350 and the $132 FX-6300 which has a disabled module; bringing back memories of older AMD chips whose modules could be brought back to life.
"AMD's new Piledriver core technology should not be a surprise to any enthusiast as much of its "embargoed" information has already been exposed on the Net. Today we take the AMD FX series model 8350 desktop variant, code named Vishera, and look at it in an enthusiast way as we expose its IPC at 4GHz, and a bit of overclocking."
Here are some more Processor articles from around the web:
- AMD's FX-8350 processor @ The Tech Report
- AMD FX-8350 "Vishera" Linux Benchmarks @ Phoronix
- AMD FX-8350 8-Core Black Edition Processor Review @ Legit Reviews
- AMD Vishera FX-8350 Review @ OCC
- The Vishera Review: AMD FX-8350, FX-8320, FX-6300 and FX-4300 Tested @ AnandTech
- AMD FX-8350: Piledriver @ Bjorn3D
- AMD FX-8350 @ Overclockers.com
- AMD FX-8350 vs Intel Core i7-3770K @ 4.8GHz - Multi-GPU Gaming Performance @ VR-Zone
- FX-8350 vs. Core i5-3470 CPU Review @ Hardware Secrets
- AMD FX-8350 (AM3+) Piledriver Processor Review @ eTeknix
- AMD FX-8350 Unlocked "Vishera" Octal Core CPU Review @ Hi Tech Legion
- AMD FX-8350 Vishera Desktop Processor @ Benchmark Reviews
- AMD FX-8350 and FX-6300 @ Legion Hardware
- AMD Piledriver FX Review - FX 8350, 8320, 6300 vs Intel Core i5 and i3 @ hardCOREware
- AMD FX-8350 Processor Review @ HardwareHeaven
- AMD FX-8350 and FX-6300 Piledriver @ TechSpot
- FX-8350 CPU Review; AMD's Vishera Arrives @ Hardware Canucks
- AMD FX8350 BE / Gigabyte HD7970 / ASUS Sabretooth 990FX R2 @ Kitguru
- AMD FX 8350 @ Guru of 3D
- AMD FX-8350 - "Piledriver" for AMD Socket AM3+ @ techPowerUp
Bulldozer to Vishera
Bulldozer is the word. Ok, perhaps it is not “the” word, but it is “a” word. When AMD let that little codename slip some years back, AMD enthusiasts and tech journalists started to salivate about the possibilities. Here was a unique and very new architecture that promised excellent single thread performance and outstanding multi-threaded performance all in a package that was easy to swallow and digest. Probiotics for the PC. Some could argue that the end product for Bulldozer and probiotics are the same, but I am not overly fond of writing articles containing four letter colorful metaphors.
The long and short of Bulldozer is that it was a product that was pushed out too fast, it had specifications that were too aggressive for the time, and it never delivered on the promise of the architecture. Logically there are some very good reasons behind the architecture, but implementing these ideas into a successful product is another story altogether. The chip was never able to reach the GHz range it was supposed to and stay within reasonable TDP limits. To get the chip out in a timely manner, timings had to be loosened internally so the chip could even run. Performance per clock was pretty dismal, and the top end FX-8150 was only marginally faster than the previous top end Phenom II X6 1100T. In some cases, the X6 was still faster and a more competent “all around” processor.
There really was not a whole lot for AMD to do about the situation. It had to have a new product, and it just did not turn out as nicely as they had hoped. The reasons for this are legion, but simply put AMD is competing with a company that is over ten times the size, with the resulting R&D budgets that such a size (and margins) can afford. Engineers looking for work are a dime a dozen, and Intel can hire as many as they need. So, instead of respinning Bulldozer ad nauseum and releasing new speed grades throughout the year by tweaking the process and metal layer design, AMD let the product line sit and stagnate at the top end for a year (though they did release higher TDP models based on the dual module FX-4000 and triple module FX-6000 series). Engineers were pushed into more forward looking projects. One of these is Vishera.