![]() Guru3D brings you an in-depth performance review and architectural overview on both these processors. AMD Phenom series processors are slowly ripening, and are aging like fine wine (they get even better over time). And that's nice as the Phenom II series processors offer great performance for the money you have to lay down on the table. Yields are good, clock frequencies go up, performance goes up. Both processors can be considered and positioned in AMDs high-end segment, yet will be priced friendly. Today AMD is releasing two processors in the Phenom II line-up, the Phenom II 955BE and the Phenom II X4 945 processor. They are part of the AMD Q4 processor product line update, arming their processor lineup with more value and higher performing CPUs.ĪMD Phenom X4 945 and 955BE processor review|test We test three AMD processors today, the Phenom II X6 1075T, Phenom II X4 970BE and Athlon II X4 645. Hyper Transport will power down and a low-power stage is activated on the memory.ĪMD Phenom II X6 1075T, X4 970BE and Athlon II X4 645 processor review If the processors are temporarily inactive, they can pretty much put themselves in sleep-mode (clocking down). There's also a new status called C1E (check in the BIOS). Each core can be clocked down independently if not utilized, saving heaps of current. And that's also where the golden nugget is to be found. Don't forget that we have four active & independent cores here. Now that's by itself interesting as it's not far off from the power consumption of a single dual-core processor. The 9850 Phenom processors has a TDP (peak wattage) of 125W. Also an interesting fact, future 45-nm AMD processors will work fine on this socket a well. Obviously we recommend you to use a Socket AM2+ based mainboard in combination with a Phenom processor to gain maximum performance out of it, as the AM2+ socket can also deliver more ampage to the processor. ![]() Last but not least the socket change was needed for HyperTransport bus 3.0. With socket AM2+ you'll also be able to make use of DDR2-1066 MHz memory, while on socket AM2 you'll be limited towards 800 MHz. Voltages for the cores and memory controllers can be set independently from each other on Socket AM2+, which in the end has everything to do with power consumption. The difference however has to do with the integrated memory controller and voltage routing. So a Phenom processors theoretically will work in an AM2 mainboard as well (BIOS update required). The new Phenom processors make use of socket AM2+, an improved socket design based on socket AM2. But here is a chart that should get you a better overview of the assorted Phenom and Phenom X4/X3 models, using their clock/HT speeds, TDP, and pricing: Processor The Phenom X4 9750 runs at 2.4 GHz with a 1.8 GHz HT speed, and a TDP of 125W, while the Phenom X4 9550 replaces the Phenom 9500 at a 2.2 GHz core, 1.8 GHz HT, and a 95W TDP. Mind you that this "Black Edition" release, the newest Phenom X4 has an unlocked multiplier that is more interesting for overclocking.Īs stated, that's not all what AMD is releasing though.ĪMD also announces several other Phenom X4 and X3 processors, in a mixture of B3 and B2 cores. The processor package remains unchanged, and features the 940-pin AM2+ design, which is fully backward-compatible with the AM2 socket. The chips also come with an integrated dual-channel/128-bit DDR2 memory controller and support speeds up to the DDR2-1066 specification. 128-bit SSE per clock cycle, a new instruction set under SSE4A. Next to the new architecture we also notice a few new enhancements and instruction sets. The processors are manufactured in AMD's Dresden plant and make use of AMD's 65 nm SOI-fabrication. the CPU has 450 million transistors, much less than I expected actually. The die size of the CPU is 285 mm² and for whatever reason we always like to know. So that gives the four cores a total of 4 MB of cache (that's excluding a little L1 cache). ![]() Next to that, it can address 2MB 元 cache as buffer where it can also exchange data in-between the cores. Runs with HyperTransport 3.0 and features a total 2MB L2 cache 512KB per core. ![]() Today's tested Phenom X4 9850 runs at 2.5 GHz. ![]() The leading flagship processor is the Phenom X4 9850 BE runs at a 2.5 GHz clock frequency at a full 2.0 GHz HT 3.0 speed at a 1.2-1.3V voltage and 125W TDP. At this time they will only be distributed among AMD OEM partners and will not get into retail soon. AMD also officially announced their triple-core processors known as Toliman. The new Phenom processor family on B3 stepping includes four models: 9550, 9650, 97 Black Edition. AMD has launched the Phenom X4 9x50-series of processors, these sport the updated B3 core, and no longer include the infamous TLB bug. ![]()
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