Amd Phenom Ii X4 Passmark Full Bandwidth Of

Good article Judging from what AMD did with 65nm Phenom, they would perhaps release 125W version in early 2010.

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PCMark Vantage centers entirely on Windows Vista-based apps, though, so its results are actually a bit more meaningful than some of the unrealistically-demanding workloads seen in the past.

Here we see the Phenom II X4 965 trounce Intels Core 2 Quad Q9550S and even best the stock-clocked Core i7-920, which gets a nudge up to 2.8 GHz with Turbo Boost.

Most interesting, though, is the fact that the overclocked Phenom II gains nothing, while the X4 965 is quite a bit faster than the X4 955 operating 200 MHz slower.

A gauge of gaming performance, 3DMark Vantage also favors the latest Phenom II in its overall suite score.

The CPU AI and physics tests overwhelmingly favor the Core i7s Nehalem micro-architecture.

Despite losing out to Core i7 in Sandras arithmetic tests, Phenom II dominates the multi-media metric.

Changing clock speed doesnt really do anything to the Phenoms memory bandwidth performance (although taking away one core seems to cost some throughput).

Core i7 and its triple-channel memory controller serve up the biggest bandwidth numbers, while Core 2 Quads northbridge-based controller hampers performance in comparison.

Amd Phenom Ii X4 Passmark Full Bandwidth Of

When pressed for an explanation as to why the triple-core Phenom II reflects less throughput, SiSoftwares engineers had this to say: Single-core test cases cannot utilize the full bandwidth of the integrated memory controller.

It is an issue related to local resources in the internal tables of the core.

You need to hold an entry in the table allocated to memory access until the memory returns with the data.

Since the table size is limited, you cant issue a new request to the memory subsystem until one of the previous requests is returned (only then you can allocate the table entry needed to hold the data).

This problem would go away if you had an infinite number of entries.

Either way, AMD really needs something new and fast.Hopefully theyll do well with the dx11 cards.

I mean, if you get an AMD Phenom II 955 and the 965, theyre completely identical except for multiplier.

So really whats new The 965 has just got a faster stock frequency.

But anybody who buys a 955 or 965 is prolly an enthusiast that will end up OCing them to 3.8Ghz.

So just go for the cheaper 955.

They need to release a new line for these up coming Intel chips.

Excellent timing, i was just wondering when i was going to see a performance review for the new 965.

Though i would like to see a benchmark comparing the overclocking potential of the 955 to the 965, im curious if its just a higher binned processor or the same one just clocked higher.

Doesnt seem like the 965 has any advantage other than the stock clock, and of course I dont plan on leaving it at stock:D.