AMD's Athlon II X3 435

AMD's Athlon II X3 435

A month ago AMD introduced the world’s first quad-core processor to debut at $99. Last week, AMD announced its third quarter earnings for 2009. While the company as a whole lost money, the Product Company (CPU and GPU design) turned a small profit. I don’t want to say that the worst is behind AMD, but things are definitely looking up.

And for the consumer, AMD is providing a ton of value these days. You're getting more transistors per dollar than Intel will give you, and it's not just bloat, these things are fast:

The value train continues with todays introduction of the first triple core Athlon II processors: the Athlon II X3 435 and 425. Clocked at 2.9GHz and 2.7GHz respectively, these processors are simply Athlon II X4s with one core disabled.

They’re also quite affordable. The 435 will set you back $87 while the 425 costs $76. This puts them on par with Intel’s Pentium E6000 series dual core processors, but cheaper than the Core 2 Duo E7500. This has been AMD’s high end dual core strategy for the Phenom’s life: sell three cores for the price of two. And in the past, it has worked.

The X3s AMD is announcing today are clocked high enough that you still have good performance in single threaded applications, and in those that can take advantage of three cores you’re almost guaranteed to have better performance than the Intel alternative.

The real question you have to ask is whether it makes more sense to spend a little more than get a quad-core processor or not.

The Athlon II X3s are 45nm 95W TDP parts and work in both Socket-AM2+ and Socket-AM3 motherboards. As I mentioned before, these are architecturally identical to the X4s just with one core disabled. That means you get a 512KB L2 per core but no L3 cache.

I’ll spoil the surprise for you here: they’re faster than the equivalently priced Intel CPUs in most cases, but that’s not too surprising.

The Athlon II X3 435 is a bit more overclockable than the X4 620. Without any additional voltage we got 3.25GHz on our 620 sample, but our 435 yielded 3.33GHz:

With an extra ~15% voltage we could get 3.63GHz:

AMD is also introducing a slew of energy efficient Athlon IIs as well. They’re all in the table below:

These energy efficient processors are binned for lower voltages and thus have a 45W TDP. Unfortunately you do sacrifice clock speed in some cases as a result. There's also a hefty price premium, at the high end you lose clock speed and pay 44% more for a 45W TDP.

The Test

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AMD's Athlon II X3 435

AMD's Athlon II X3 435

SYSMark 2007 Performance

Our journey starts with SYSMark 2007, the only all-encompassing performance suite in our review today. The idea here is simple: one benchmark to indicate the overall performance of your machine.

Overall performance under SYSMark is pretty balanced for the Athlon II X3 435. It's faster than the $99 quad-core (620) but slightly slower than the quad core 630. We're slower than the old triple core Phenom II X3 720 though.

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AMD's Athlon II X3 435

AMD's Athlon II X3 435

3dsmax 9

Today's desktop processors are more than fast enough to do professional level 3D rendering at home. To look at performance under 3dsmax we ran the SPECapc 3dsmax 8 benchmark (only the CPU rendering tests) under 3dsmax 9 SP1. The results reported are the rendering composite scores:

Compared to the Intel dual-core options, the Athlon II X3 435 is a definite winner here. It's got the core count and clock speed to beat the old Penryn derivatives. Its biggest competition comes from its own family, the Athlon II X4 620 is the better buy here.

Cinebench R10

Created by the Cinema 4D folks we have Cinebench, a popular 3D rendering benchmark that gives us both single and multi-threaded 3D rendering results.

As I've been mentioning this entire time, the Athlon II X3 435 doesn't really sacrifice clock speed in its three-core configuration. At 2.9GHz even its single threaded performance is comparable to the Pentium E6300. Run a multithreaded app however and the performance goes from parity to leading:

POV-Ray 3.73 beta 23 Ray Tracing Performance

POV-Ray is a popular, open-source raytracing application that also doubles as a great tool to measure CPU floating point performance.

I ran the SMP benchmark in beta 23 of POV-Ray 3.73. The numbers reported are the final score in pixels per second.

The POV-Ray results echo what we've been seeing thus far, vs. Intel there's no contest - the 435 is the better value. Compared to the quad-core Athlon IIs however, the 435 isn't very good.

Blender 2.48a

Blender is an open source 3D modeling application. Our benchmark here simply times how long it takes to render a character that comes with the application.

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AMD's Athlon II X3 435

AMD's Athlon II X3 435

Fallout 3 Game Performance

Bethesda’s latest game uses an updated version of the Gamebryo engine (Oblivion). This benchmark takes place immediately outside Vault 101. The character walks away from the vault through the Springvale ruins. The benchmark is measured manually using FRAPS.
Finally! We have a test where the Athlon II X3 435's clock speed gives it the advantage over the 620. If you're a gamer but want more cores, the 435 is a good balance of performance in existing games but better than dual-core performance in well threaded apps.

Left 4 Dead

I've got no complaints about the X3's performance in Left 4 Dead either, it's nearly as fast as the more expensive Core 2 Duo E7500 (and with a much tastier upgrade path).

FarCry 2 Multithreaded Game Performance

FarCry 2 ships with the most impressive benchmark tool we’ve ever seen in a PC game. Part of this is due to the fact that Ubisoft actually tapped a number of hardware sites (AnandTech included) from around the world to aid in the planning for the benchmark.

For our purposes we ran the CPU benchmark included in the latest patch:

Even in our most heavily threaded game test, the X3 435 is a bit faster than the 620.

Crysis Warhead

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AMD's Athlon II X3 435

AMD's Athlon II X3 435

Power Consumption

Thanks to its higher clock speed the Athlon II X3 435 draws a little more power than the 620 at idle, but uses a little less under load. The new energy efficient chips can't be touched. Personally I wouldn't spring for them, but if you're looking to upgrade a building full of machines and want as much power reduction as possible the e series can deliver.

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AMD's Athlon II X3 435

AMD's Athlon II X3 435
SYSMark 2007 Performance

Our journey starts with SYSMark 2007, the only all-encompassing performance suite in our review today. The idea here is simple: one benchmark to indicate the overall performance of your machine.

AMD's Athlon II X3 435

AMD's Athlon II X3 435

We'll start with the good news first. The Athlon II X3 435, priced at $87, is a better buy than any of the similarly priced Intel dual-core processors. In heavily threaded applications it's even faster than the more expensive Core 2 Duo E7500. Compared to Intel, the X3 435 is a clear value leader.

The problem is compared to AMD, the Athlon II X3 435 isn't that impressive. The Athlon II X4 620 is faster in nearly every multithreaded benchmark, and it's only costs $12 more. It's only in games and other lightly threaded applications where the 435's higher default clock speed makes up for its lack of a fourth core.

The Athlon II X3 435 is about $15 more expensive than it should be to make sense in AMD's lineup. It's a great step between the dual and quad-core options, but if you need the performance you're probably better off with the 620.

You do get better overclocking potential (thanks to lower thermal output of only three cores), but bring overclocking into the mix and you can narrow the clock speed gap with an overclocked 620.

Compared to Intel, I like the Athlon II X3 435. Compared to AMD, I'd take a quad-core 620.

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