I can understand the frustration but maybe stop and think about all of this and wait for official news not from “trusted unnamed sources”. A great solution would be to have mouse-over change the ordering so everyone can pick whats best for them. When it finds a double instruction in the first of the 4 lines, and single instructions in the next two lines, it will generate Then he says the loading upper 32bits has no stall. Thus, sixteen of these four-byte double word writes are being combined into a single write, meaning that once the WCC overflows it will be outputting a cache line each sixteen inner loops. My i is clocked at 3. I think you are onto something in wondering if the new cache organization is responsible for the loss of BD performance.
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The current solution where the operating system must know the details of every CPU on the market is not practical, and it does not work with virtual CPUs etc. Could the full load LS fractional number depend on a hidden latency that happens from time to time when WCC is forced to free a line down to L2?
Home Reviews News Forums. The test show some consistencies but there is still a rather big difference in attitude and benches towards the FX. The most notable points are Aggressive power-saving features.
The trace cache on Intels Netburst P4 was not very successful. Skip to main content AMD’s Steamroller architecture will offer tweaks to improve the performance of Bulldozer and Piledriver while reducing power consumption.
You ain’t the only one!
The AMD Bulldozer is a major redesign of previous microarchitectures. Unfortunately, these instructions will rarely be used because they are unlikely to be supported by Intel. The Core i is a quad-core CPU at 3.
Core Scaling FX versus Phenom: I think AMD needs hyper threading bolted piledriber to extract more performance or something. True, ffor people couldn’t care less, and many application that could benefit – haven’t been rewritten to take advantage of these new instructions. The decoder can do or I’m losing you here – do you mean the first decoder can actually fetch one 2-MOP or two 1MOP instruction and decode them?
The basic building block of Bulldozer is the dual-core module, pictured below.
If it finds a double instruction in any of the other lines, it will delay it to piedriver next clock cycle and put it in line 1. My house is already hardwired with cat5 in everyroom so it makes sense to me unless anyone else has a better suggestion. Test results for AMD Bulldozer processor – fellix – In reality, we are just as confused how 2 billion transistors loses to 1.
Soon your pc will be gone and you will be running your monitors off of thin clients. Agner wrote Cache bank conflicts in the data cache are so frequent that it seriously degrades the performance in some tests.
A great solution would be to have mouse-over change the ordering so everyone can pick whats best for them. Let us be thankful that a company such as AMD has the guts to restructure the processor, bulldoze we can see new insight coming out of it. Just need to figure out a few details.
This site may earn affiliate commissions from the links on this page. The only real uncertainty is whether AMD will be able to compete with Intel’s enthusiast products so they can make bozos like us happy.
I would imagine a large chunk of the transistor difference is from the difference in L2 cache sizes. However, I feel that these little examples show the BD limitations in a larger sense, specifically why only operations that have fairly complex loops but generate a quite limited number of final write operations intermediate write operations will be combined away by the WCC if the loop is written correctly are the main applications that can take advantage of BD’s larger number of cores – applications such as 7Zip or WinRar if written to be able to take advantage of this.
If I upgrade I won’t be doing it until ddr4 chips and boards hit as at least then BD,and pci-e 3. The marketing spin from AMD is transparent to anyone that knows tech. March 6, July 4, Many function libraries implement memcpy as a loop of aligned xmm moves, which is efficient on all processors.
I have to wonder if piledriver will improve on power consumption or overclocking due to being the second version AMD has made on 32nm but i would not expect it.
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