Tuesday, February 10, 2009

AMD Socket AM3 Phenom II Processors Reviewed

phenom ii x4 phenom ii x3

AMD Socket AM3 processors are now here. These are Phenom II CPUs that have support for both DDR3 and DDR2 memory.

Quad-cores:

  • Phenom II X4 model 810
    • US$175
    • 2.6GHz
    • 4MB L3 Cache
  • Phenom II X4 model 805
    • OEM only
    • 2.5GHz
    • 4MB L3 Cache

Triple-cores:

  • Phenom II X3 model 720 Black Edition
    • $145
    • 2.8GHz
    • 6MB L3 Cache
  • Phenom II X3 model 710
    • $125
    • 2.6GHz
    • 6MB L3 Cache

Common specs:

  • Socket AM3 (can be used with most AM2+ motherboards)
  • DDR2 or DDR3
  • 2.0GHz memory controller

Guru of 3D put the Phenom II X4 810 and X3 720BE on the test bench:

"... try to mentally place the price and performance of Phenom II X3 and X4 processors in the Core 2 Duo and Quad range. Then it all makes sense. This is where AMD is really competing with Phenom II. And in this product range they certainly are very strong. ... The one processor that for me personally shined was, interestingly enough, the Phenom II X3, the 720 BE processor. I too have that weird stigma about having three cores instead of four, as much as you do. But the results didn't lie ... the X3 720BE is a very competitive Phenom II processor clocked at 2.8 GHz with that luxurious 6MB L3 cache. For roughly 145 USD you can get this BE edition and as such it will allow you to easily overclock it towards 3500-3800 MHz on the most cheap air-cooler one can think of. Again, this particular processor will be placed on the shelves for a only 145 USD and as such this really is an awesome deal." [Guru of 3D | AMD Phenom II X4 810 and X3 720BE review]

AnandTech had a close look at the Phenom II X4 810 and X3 720:

"When AMD launched the Phenom II X4 940 and 920 I called it a True Return to Competition. With the rest of the lineup now more fleshed out, it's truly a return to competition. At every price point that AMD targets, it has produced a CPU competitive to Intel's offerings. ... The performance benefits aren't worth it for Phenom II, so while AM3 sounds cool, it's not necessary today. Thankfully AM3 CPUs will work in AM2+ motherboards, so you aren't forced into a relationship with DDR3 if you're not ready." [AnandTech | The Phenom II X4 810 & X3 720: AMD Gets DDR3 But Doesn't Need It]

PCPerspective reviewed the Phenom II X4 810 and X3 720:

"This AM3 launch will be a disappointment to some, mainly because there is not a high end part that goes with it, nor do we see a massive increase in performance per clock by going to DDR-3 memory. It is still an immature, though stable, platform. Performance will eventually get up there once the motherboard guys figure out the new memory controller and AMD provides potential micro-code updates. ... The X4 810 is a nice part which will make quite a few folks happy. It does not run really hot, it does not pull all that much power, and it certainly performs well considering the price it is at. In most tests, in comparing to previous results from the Phenom 9950, it was about 5% faster overall than its predecessor at that same speed. ... The X3 720 is probably the most interesting part that this release is seeing. The three cores, slightly lower power consumption, better overclocking performance, and the performance of 3 cores for less than the price of a competitive dual core from Intel. Triple cores still have not seen a lot of acceptance from users and OEMs alike, but this particular product might turn a few heads. In most of the single threaded applications, the X3 720 fared about as well as expected against the Core 2 part." [PCPerspective | Phenom II X4 810 and X3 720 Processor Review]

Tom's Hardware tested the Phenom II X4 810 and Phenom II X3 720 Black Edition:

"If you take Socket AM3 out of the picture, the new Phenom IIs mainly serve to fill in and update AMD's processor lineup with its 45 nm technology. Because they drop right into AM2/AM2+ motherboards, you could almost ignore the fact that they sport 938 pins and just be happy AMD is augmenting the mid-range and entry-level nooks in the Phenom family with chips loaded with more cache, higher clocks, and significantly improved scalability. ... What does make sense is the Phenom II X3 720 Black Edition on an existing AM2/AM2+ setup, leveraging cheap DDR2 memory. Gone are the days of Core 2 Duo's dominance over the value-oriented gaming market. Now that AMD has its hat in the ring, there's a lot more to like about the oddness of three cores." [Tom's Hardware | Socket AM3: AMD's Phenom II Gets DDR3]

HardwareZone reviewed the Phenom II X4 810 and X3 720 Black Edition:

"... the Phenom II X4 810 and X3 720 'Black Edition' that we tested did not give us any surprises. Their results were in line with our expectations given what we have seen of the X4 940/920. Moreover, the X3 720 looks to be quite an interesting model, using its extra core to keep up with the Intel dual-cores and at the same time, making use of its higher 2.8GHz clock and larger L3 cache to edge ahead of the X4 810 for those non multi-threaded scenarios. Though we haven't tested its overclocking potential, having one less core usually allows for a better chance of further overclocking this Black Edition X3." [HardwareZone | AMD Does DDR3 - The AM3 Phenom II]

X-bit Labs had a close look at the Phenom II X4 810:

"... the main advantage of Socket AM3 processors is their flexible memory controller that can work with both: DDR3 as well as DDR2 memory. That is why you don't have to use the newly announced mainstream Phenom II processors in Socket AM3 systems. They will work perfectly fine in the existing Socket AM2+ or even Socket AM2 infrastructure. ... As for the AMD Phenom II X4 810 processor we discussed today, it is another incarnation of AMD's strategy to be offering higher performance at a lower cost. Our tests showed that its performance is comparable to that of Intel Core 2 Quad Q8200, while its price is a little lower. As a result, AMD currently has a great alternative to all least expensive quad-core Intel processors starting with the Core 2 Quad Q9400 model. In other words, AMD made a very significant step to offering a competitive lineup of processors that we have every reason to recommend as a good buying choice." [X-bit Labs | Meet Socket AM3: AMD Phenom II X4 810 CPU Review]

RegHardware reviewed the 2.6GHz X4 810 and a 2.8GHz X3 720 Black Edition:

"Our main finding is that DDR 2 and DDR 3 deliver the same performance with Phenom II, and it doesn't matter whether you use DDR 3 at 1333MHz or 1600MHz. If you're running your CPU at stock speeds then DDR 3 saves some 10W, but when you overclock the CPU the difference in power draw is negligible. ... The introduction of DDR 3 doesn't make a fundamental difference to Phenom II, but the new Socket AM3 processors deliver plenty of bangs for your buck and put AMD right back in the game." [RegHardware | AMD Phenom II Socket AM3 processor]

ExtremeTech tested the AMD Phenom II X4 Model 810 socket AM3 processor:

"From a buyer's perspective, the Phenom II model 810 is priced a little lower than Intel's Core 2 Quad Q8200. In most consumer and office applications, the two platforms essentially achieve performance parity. The exception, of course, is digital photography. If you're heavily into digital photography, you'll want to remain firmly in the Intel camp. ... The Phenom II model 810 represents a reasonable buy currently-but we expect its overall lifespan to be somewhat limited." [ExtremeTech | AMD Socket AM3 CPUs Ship--Phenom II 810 Review]

The best feature I see about these new Socket AM3 processors is that they don't necessarily need to be used with an 'official' AM3 motherboard. Most AM2+ motherboards would work just fine, although of course you'll still be using DDR2 memory (which at present DDR3 prices, is a financial advantage).

These AM3 processors are indeed good news to folks who are looking for more value for their money. Those already running an AMD system with an AM2+ mobo just upgrade to the new processors without the need to upgrade to a new chipset. If you then decide to upgrade to a DDR3 system, you can do so later on.

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