Bulldozer's gonna be on 'da cheapz!
- Thread starter spynoodle
- Start date
Troncoso
VIP Member
If it's not better, then they really didn't make great progress on these new cpu's
linkin
VIP Member
At least they got something done though. The Phenom II's and Athlon II's were going against the 775 chips. Then we had 1156, 1366, now 1155. And just now we're seeing AM3+
I dont really believe that it will beat Sandybridge/Ivybridge clock for clock. Might equal it or slightly slower. Where AMD is going to make it up is, AMD module vs. Intel core with HT and a massive amount of L2 cache.
spynoodle
Active Member
I think I'm finally starting to get the point of this module thing. Basically, one module is as powerful as about 1.5 cores, but with only one thread. That would really help with basic tasks such as web browsing, right?
Also, does the fusion E350 already use the module concept? I've read that it runs unbelievably well with single-threaded programs. Can it adjust the amount of threads per module?
Well it can be more powerful then that, depending on the work load. AMD claims 80% of two full cores.
Each module has two sets of pipelines (the reason it shows up as two cores) Shares some upper end and the L2 cache. How the performance comes into play is how it will runs threads.
A module will not split up a single thread on both sets of pipelines. So a single thread will run with the full upperend and a set of pipelines and the whole 2mb. of L2 cache (which is a good thing).
But the question is how it will splits up threads. Take two threads, will it allocate the second thread to the same module and use the second set of pipelines (80% of two full cores) or will it send the thread to the second module (so it can use 100% resources of the upperend and L2) of both modules. The later would be better performance.
Say you have a 4 module running 4 threads, it would be better to run one thread on each module, then start using the other set of pipelines when thread 5/6/7 and so on kicks in.
No the E350 Zacate uses the Bobcat cores. Dont think they will use the bulldozer core till they release, I think what they are going to call Trinity.
spynoodle
Active Member
Hmm, I wonder why it works so well with one thread. Does it use a similar concept?
Thanks for the info!
claptonman
New Member
So the boards that'll work with the bulldozer are the AM3+ with the black sockets?
linkin
VIP Member
from what I've read the CPU's will work in the AM3 socket on 800 series chips, with an updated BIOS, but will not officially supported by AMD.
Good move by them I suppose. I think their next batch of CPU's should ditch the PGA pins and go LGA-type socket.
2048Megabytes
Active Member
I do not think Advanced Micro Devices will do that because they will lose backwards compatibility with Socket AM3+ processors. I think it would be a good move to change to land grid array. Pin grid array processors are more fragile than land grid array motherboards.
Would it be a good idea for AMD to release a pin grid array socket and a land grid array socket in the same generation? Then the next generation could just move on to LGA socket.
linkin
VIP Member
I meant for whatever they have planned next, after Zambezi. Sometimes breaking compatibility is required to move forward
You mean a bobcat core vs. a Zambezi module?
Bobcat isnt socket AM3/+
If it just has one thread on a module. It gets to use the whole upperend a set of pipelines and the full L2 cache.
If it running two threads is has to share the Fetch/Decode/FP Scheduler and the L2. The L2 really doesnt matter that much though because each module has a full 2mb. of L2 cache.
Each set of pipelines has their own Integer scheduler/128 bit FMAC and L1 cache.
Thats the reason they say a module has the 80% preformance of two full cores when running two threads. But thats alot better then Intels Hyper Threading.
spynoodle
Active Member
Lol, I've had some tough times with PGA chips in the past. I bent a good 10 pins on one once. Not fun.
My friend accidentally put one through the wash once (old piece of junk, luckily). It looked so demolished afterwards. Still, I hate the prospect of bending a pin on my LGA775 motherboard. PGA CPUs are usually fixable.Yeah.
A good read.
http://techreport.com/articles.x/19531
Bobcat is really like the K8 core. But pretty much tweeked/full out of order instruction/supports the SSE1-3 SIMD/full AMD64 64-bit instructions and fast L1 cache
Think the next upgrade for it will be something like the K10 core (Enhanched bobcat) then going to a Bulldozer type core after that. But my guess would be the Enhanched will be dropped to go straight to the bulldozer type core.
