Previewing AMD's Brazos, Part 1: More Details on Zacate/Ontario and Fusion
by Anand Lal Shimpi on November 9, 2010 1:09 AM ESTThe Chipset err...Fusion Controller Hub
The Zacate/Ontario APUs have an integrated PCIe interface sporting 8 lanes. Four of those lanes are used for AMD’s Universal Media Interface (UMI) - a bus that links the APU to the Hudson FCH. The remaining four can be used for discrete graphics or a combination of discrete graphics and other PCIe controllers. Both PCIe interfaces can run at gen 1 or gen 2 transfer rates.
Display output naturally stems off of the APU. You can drive two displays in tandem over any combination of VGA or Display Port/DVI/HDMI/LVDS.
As I mentioned earlier, the APU sports a single channel memory controller - but you can install up to two DIMMs on that channel. Speeds are down from the 1333MHz system we tested at IDF, DDR3-1066 is the max you’ll officially see on a Brazos system.
The Hudson FCH supplies up to 14 USB 2.0 ports, 6 x 6Gbps SATA ports and another 4 PCIe lanes. The FCH is based on AMD’s SB800 series of South Bridges. Despite the small size, this is a full featured platform.
From the looks of it, AMD has all of the right ingredients for some very competitive entries in the mainstream and ultraportable notebook markets. Now it’s just up to the OEMs to build something cool out of it.
Check back in about a week for the full rundown on Zacate performance.
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khimera2000 - Wednesday, November 10, 2010 - link
and to match atoms Visual performance you will have to add in a nvidia card, which means on its own the atom missess out since smart users will want to use the power of there video cards to accelerate there daily tasks. Im already using it in microsoft office, the beta of IE8 and BETA firefox.Truth is intel does not have an image for fast video cards, and thats probably going to hurt the more in the long run then AMD's rep for making a good alternative.
Dark_Archonis - Wednesday, November 10, 2010 - link
Can you show me concrete proof that is is cheaper for AMD specifically to make a 75mm2 chip than it is for Intel to make an 87mm2 chip? We can assume its cheaper, but we have no concrete facts to back this up. The die size difference between 75 and 87 is negligible.nafhan - Tuesday, November 9, 2010 - link
The i3 is a bigger more complicated chip and package (MCM). The ULV i3's are in the same power envelope (18W), but by moving to an i3 you'd be trading GPU power and (at least to Intel) a higher price for additional CPU power. So, depending on the application, it might not be an upgrade.Also, with the Ontario vs. Atom, it's again going to be about the GPU. Probably very similar CPU power with much improved GPU capabilities.
Even if it's not a "home run", it's AMD leveraging their expertise and hitting Intel where they have a hole in their lineup.
Dark_Archonis - Tuesday, November 9, 2010 - link
Yes, until Intel covers that hole, and we are back to the usual state of things, AMD being behind Intel.Prosthetic Head - Tuesday, November 9, 2010 - link
Sorry, but you seem to be totally missing the point. The architectural differences mean that even at 1GHz bobcat is very likely to beat the 1.6GHz atom, even in most CPU bound workloads. Atom is an incredibly poorly performing 'in order' architecture.What you are saying is not much better than kids back in 2003 saying that "a 2.8GHz P4 Celeron MUST beat a 1.8GHz Athlon64 because its got over 1/3rd more GHz!!!"
The graphics system is also very important for the target market, a mediocre system can still feel very snappy in most likely usage scenarios provided it has a capable graphics subsystem. Now that many of the highly CPU bound media tasks (HD playback, transcoding, compression) are starting to make use of gpGPUs that will become even more important. Intel may POSSIBLY be able to get adequate 2d/3d acceleration working and integrated soon, but they are very far behind AMD here and have never marketed a CUDA/Stream/OpenCL capable chip and driver - thats a lot of catch-up work to do.
MFK - Tuesday, November 9, 2010 - link
Wish I could up-vote you like Reddit/Engadget.But yeah, basically what I was gonna say.
nitrousoxide - Tuesday, November 9, 2010 - link
P4 is running at almost 3 times the frequency of Athlon64...don't forget that its ALU runs at double frequency of the core (5.6GHz for a 2.8GHz P4)jollyjugg - Thursday, November 11, 2010 - link
Except what you are forgetting is that Bobcat is an out of order core and Atom is an inorder core. There is a lot of difference between these styles of architectures. What matters is not entirely the clock speed but also IPC. Only running a CPU at a higher frequency would be a brute force approach. Out of order processor has a much higher IPC than in order processor. Hence dont under estimate the CPU yet until you have seen Anand's promised performance numbers next week. Also however the CPU turns out, it is a real boon for people in the netbook segment to get a good graphics. People are frustrated with Intel's sucked up graphics and their over priced Atom based systems which hardly measure up to anything. It may not be something that turns the world upside down. But nevertheless it will be something that will be very welcome. We should also not forget that fusion is in their initial stages. It will get better with time.This is one thing Intel will take a long time catching up Graphics!!!!!! We may never know. Visual experience is something which is very powerful. It captures people's imagination. At an outset iphone and another phone may look the same. But its the performance that is the clincher. If this performs this is clinch for sure.
SteelCity1981 - Tuesday, November 9, 2010 - link
If it's based on the Evergreen architecture then why not just call it Radeon 5310 and 5250 series? Just confusing to call a Radeon GPU a 6310 and a 6250 when it's based on the Radeon 5 series. Especially considering there will be no new Radeon 6 series that will come out lower then the 6800 series.mino - Tuesday, November 9, 2010 - link
Well, 6800 series itself is heavily based on the 5000 series so ...It is all just branding. And, there WILL be more 6000 series parts. Llano being a confirmed one with at least Turks on the table as well.