AMD Kaveri Review: A8-7600 and A10-7850K Tested
by Ian Cutress & Rahul Garg on January 14, 2014 8:00 AM ESTSocket: FM2+
The new Kaveri processors are built to use the sort-of new FM2+ socket based motherboards. These motherboards fit both FM2+ and FM2 APUs, and thus have been on the market for a good number of months already. However the boards currently on the market may require a BIOS update, and e-tailers shipping motherboards out today may still have the older not-updated revisions in stock, so it is worth confirming that the motherboard you order is updated.
AMD’s generational split on Kaveri is indicative of market pressure and AMD’s history – users like either the processor or the motherboard to be forwards or backwards compatible in terms of compliance. In this case the following table applies:
| Socket Compatibility Chart | ||
| Will Work in FM2 | Will Work in FM2+ | |
| Richland | Yes | Yes |
| Kaveri | No | Yes |
As Kaveri comes with two extra pins that are blocked off with older FM2 motherboards, they are not compatible.
For our testing today, we had sourced the ASRock FM2A88X Extreme6+ and FM2A88X-ITX+ motherboards, both of which will be the focus for review in due course.
Chipset/FCH: A55, A78, A88X
To add some confusion into the mix, AMD is using a mixture of old and new chipsets on FM2+. Kaveri will support the A55, A78 and A88X chipset based motherboards, but not the A75 chipset that was used for Llano/FM1 motherboards. Perhaps more confusing is that while the old Richland APUs will be able to be used on FM2+ with A88X, the older FM2 motherboards will not come with A88X. How about a table to make it clearer:
| Chipset Compatibility Chart | |||
|
Will Work with Llano APUs |
Will Work with Trinity & Richland APUs |
Will Work with Kaveri APUs |
|
| A55 + FM1 | Yes | No | No |
| A55 + FM2 | No | Yes | No |
| A55 + FM2+ | No | Yes | Yes |
| A75 + FM1 | Yes | No | No |
| A75 + FM2 | No | Yes | No |
| A78 + FM2+ | No | Yes | Yes |
| A85X + FM2 | No | Yes | No |
| A88X + FM2+ | No | Yes | Yes |
Though even a table doesn't make the compatibility matrix crystal-clear, it does help to make sense of what users can expect for chipset and sock compatibility. Basically, any A88X motherboard you buy will fit the Kaveri APU. For A78, we are currently under the impression that these will be FM2+ only as well, just do not get confused with older ‘AMD 780L’ Northbridge chipsets that were advertised with A78 in the motherboard name that used the AM3 socket. A55 is almost a free-for-all, with FM1 and FM2 motherboards using it.
As for the differences between the older A85X and A88X chipsets, there are only a few to speak of. Support for PCIe 3.0 is the big one, with any FM2+ and A88X motherboard and Kaveri APU taking full advantage of PCIe 3.0 in all its glory, either as an x16 slot or an x8/x8. A88X still has eight 6 Gbps ports and four USB 3.0 ports native, as well as supporting RAID 0, 1, 5 and 10. The other only upgrade to note is the move to XHCI 1.0.
| Chipset Comparison | |||||
| A55 | A75 | A78 | A85X | A88X | |
| Chipsets |
FM1 FM2 FM2+ |
FM1 FM2 |
FM2+ | FM2 | FM2+ |
| PCIe Generation | 2.0 | 2.0 | 2.0 | 2.0 | 3.0 |
| PCIe Lane Allocation | 1x16 | 1x16 or 2x8 | 1x16 | 1x16 or 2x8 | 1x16 or 2x8 |
| SATA 6/3 Gbps | 0 + 6 | 6 + 0 | 6 + 0 (?) | 8 + 0 | 8 + 0 |
| USB Ports (3/2/1.1) | 0 + 14 + 2 | 4 + 10 + 2 | 4 + 10 + 2 (?) | 4 + 10 + 2 | 4 + 10 + 2 |
| RAID | 0, 1, 10 | 0. 1, 5, 10 | 0. 1, 5, 10 | 0. 1, 5, 10 | 0. 1, 5, 10 |
| TDP | 7.6 W | 7.8 W | 7.8 W ? | 7.8 W | 7.8 W ? |
Unusually for AMD, little information about chipset evolution was provided through the normal channels.
What about FX CPUs, or Server CPUs?
Leaked roadmaps have not been kind to AMD’s FX range. The ‘king’ of the Vishera family of FX CPUs, the quad-module eight-thread FX-9590, looks like it will be the king of the FX line for a little while longer, as shown in this roadmap:
As you might imagine, there is no public comment from AMD about the lack of new FX CPUs with Steamroller cores coming soon.
Depending on which roadmap you look at, AMD’s server offerings are mixed. Some report that During 2014 we will see the launch of “Warsaw” CPUs featuring 12-16 Piledriver cores, and there is no current mention of high-end Steamroller based Opterons at all. The official roadmap from AMD from June shows this, including their ARM server discussion, but a recently leaked roadmap shows that Steamroller will appear in their 1P compute clusters, followed by Excavator in 2015, but Piledriver based 12-16 thread machines will stay at the top of the pile.
Facebook
Twitter
RSS
380 Comments
View All Comments
Ian Cutress - Tuesday, January 14, 2014 - link
I did a look back to C2D this time last year: http://www.anandtech.com/show/6670/dragging-core2d...When I get into the swing of testing for Gaming CPU viability again, I'll make sure it is part of the testing matrix.
ImSpartacus - Tuesday, January 14, 2014 - link
I've been reading Anadtech since I was in high school and that has to be my favorite article. I reference that article constantly.It's so hard to find reliable & exhaustive benchmarks of old CPUs. If you could update it every 2 years, I would love you forever!
just4U - Tuesday, January 14, 2014 - link
I read that article and it got me to thinking.. Maybe what is needed is not a direct comparison with new and competing products (which companies may not like..) but rather something stand alone that gets refreshed like your E6400 article. It sets the bar on what the reviewer (and likely most of us) think is needed these days..I know for myself I see a lot steps sideways in the computer industry but it's no longer leaps ahead like it once was.alyarb - Wednesday, January 15, 2014 - link
That would be great. I have a C2Q at 3.7 GHz and a 5850 at 800 MHz. Sure, that is >350W under load, but it still gets the job done at 1080p even in 2014. I have tried and can't justify replacing it all just yet.Similarly I'm not surprised to see Llano is not at the bottom of these charts and is still within striking distance of Kaveri in a lot of the tests. One day I'd like to see the past 8 or 10 years of CPUs all put through the same battery of 2013-2014 tests.
Integration and new features are all welcome, but let's take a look, as performance skeptics, at how far we've really come all this time.
anubis44 - Saturday, January 18, 2014 - link
"I have a C2Q at 3.7 GHz and a 5850 at 800 MHz. Sure, that is >350W under load, but it still gets the job done at 1080p even in 2014. I have tried and can't justify replacing it all just yet."Try playing Company of Heroes 2 (my current favourite) on that rig, and understand the meaning of the word 'obsolete'. That game will bring that system to it's knees, and it won't be pretty.
just4U - Sunday, January 19, 2014 - link
Throw in a 760 or a 280x then.. see if it's still brought to it's knees.. Hell a 270/x might do.. it's substantially faster than the 5850 as well.SofS - Friday, January 17, 2014 - link
Careful when comparing older processors regarding the memory subsystem since without the integrated controller they are very sensitive to memory performance or at least my C2Q 9550 @3410MHz seems to be. In my case the upgrade to to a G.Skill F3-12800CL6-2GBXH dual kit I made some years ago was meaningful and some other readers here on similar platforms might find that only upgrading the RAM would give them headroom enough to avoid a whole new system purchase for a while longer. Currently I also own a i7-4800MQ based notebook with dual KHX1600C9S3/8G and while noticeably faster for some cases it does not really enable me to game at higher settings than my desktop system given the GPU being a GTX 765M. Going forward a GPU upgrade to the desktop system is all I am looking for.RussianSensation - Friday, January 17, 2014 - link
Sorry, but you may have a confirmation bias here. You bought new memory expecting the system to perform much faster but years and years of personal ownership of C2D/C2Q systems and online reviews show that it hardly performed faster with faster memory. That architecture in fact performed faster with tighter latency. Your kit doesn't even have 5-5-5-15 timings. C2Q 9550 @ 3.4ghz is a slow CPU compared to Core i7 4770 @ 4.5ghz for gaming. Your memory upgrade may have netted you an extra 2-3% increase on average at best.SofS - Friday, January 17, 2014 - link
Come to think of it, maybe the amount was more important, besides going down to CL6 previously it was 2x1GB instead of 2x2GB. If that is the case then my 765M must be holding the 4800MQ back for gaming or something else is very wrong. Currently the only games I play that do not perform properly at 1080p are Witcher2 and Tomb Raider, probably that has more to do with the GPU than the CPU/RAM tough the real question is if a better next generation mid range GPU would still be able to work properly with them.Albangalo - Wednesday, January 15, 2014 - link
While it's not to do with Kaveri, Tom's Hardware did some articles comparing current cpus with older ones:Intel Ivy vs c2d & c2q: http://www.tomshardware.com/reviews/ivy-bridge-wol...
AMD fx vs k10: http://www.tomshardware.com/reviews/piledriver-k10...