MacbookProEarly2011
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Mac OS X 10.6.7 suggests support for generic video cards
Hacker Tony of TonyMacx86 discovered that the latest Mac OS X 10.6.7 update for the 2011 MacBook Pro includes native graphics acceleration for select AMD and ATI video cards. These cards include seven Radeon 5xxx and three 6xxx models that are not present in any shipping Mac products. Several of these AMD/ATI cards may debut in the upcoming refresh of the Apple iMac line, but Tony believes Apple's support for these cards extends beyond built-in hardware. The hacker proposes the idea that Apple may support off-the-shelf video solutions in its upcoming desktop models. In this scenario, a Mac user would be able to swap out their video card, similar to how PC users replace video hardware on their Windows machines. Most Macs do not currently offer user-replaceable video cards, with the exception of the Mac Pro line; even there, only a very small subset of the cards on the market have Mac-compatible drivers. [Via MacNN]
MacBook Pro crashes: Apple disables Turbo Boost under Windows?
Apple may have been aware for some time of the problem of new MacBook Pros crashing under heavy loads. According to the UK's PC Pro magazine, Apple appears to have deliberately turned off Turbo Boost for the top-end 13" model (with a dual-core 2.7 GHz Intel Core i7-2620M processor) when running Windows under Boot Camp. The magazine originally thought that Turbo Boost had been disabled under OS X as well, but then tests by AnandTech showed that it was only disabled under Windows. "We first noticed a problem when the benchmarks finished five full runs and the results popped up on screen: the times taken to complete several of the most intensive tests were rising with each run" says PC Pro. "This would suggest an overheating problem, so we ran a temperature monitor to find out how hot this Sandy Bridge CPU was getting." In fact, the CPU was reaching around 93°C -- almost 200°F. "93°C is not necessarily too high for a modern CPU, but it is the root cause of the bigger performance problem." PC Pro says they're sure the processor isn't turning off Turbo Boost dynamically, since it didn't work at all during their week of testing no matter what the CPU temperature was. Also, the cheaper model with the i5 processor did use Turbo Boost, as did the i7 model under OS X. And after measuring the underside temperature of the top-end model at 60°C -- 140°F -- they conclude that it might actually be a better deal to buy the cheaper 13-inch MacBook Pro. If Turbo Boost is disabled on the higher model, the lower-end version will actually run Windows faster than the more expensive MacBook Pro. (Edited to make clear that the problem as tested manifested in i7 13" MacBook Pros).
2011 MacBook Pros reportedly crashing under heavy loads
Last week we reported that the new Intel Sandy Bridge-based early 2011 MacBook Pros are experiencing issues with iTunes Home Sharing. Now it appears that the top-of-the-line MacBooks are also having issues when users are trying to put the new processor to the test. When operated under heavy load conditions, such as compiling code, running a virtual machine or rendering 3D images, the machines operate at very high temperatures and then lock up. A user describing the issue in the MacRumors forum noted that the machine appears to be completely locked -- no mouse control or keyboard response -- although it can be accessed via SSH. There's a very long thread in the Apple support discussion forums with a huge number of posts by unhappy users. Fortunately, the problem is very reproducible, which is useful in finding root cause for the issue. It's thought that the problem is related either to the graphics driver or the power management subsystem, which means that the solution could be as simple as a firmware update from Apple. The company is apparently aware of the issue, raising it to priority status and assigning engineering resources to finding a solution quickly. Until a fix is found, it may be best to quit as many open apps as possible when performing CPU-intensive tasks to avoid running into a freeze situation.
MacBook Pro review (early 2011)
Apple might say we're in the post-PC era, but hey -- turns out they still make Macs in Cupertino, and the new MacBook Pro is actually one of the more aggressive refreshes in the machine's history. Not only has it been less than a year since the last MacBook Pro spec bump, but our 15-inch review unit is actually the first Sandy Bridge system we've received from any manufacturer. And it's not just the CPU that's new: Apple's also launching the new Thunderbolt high-speed interconnect, and there's been a big switch to an AMD Radeon HD 6750M GPU paired with Intel's integrated HD Graphics 3000, an arrangement that should offer both solid graphics performance and great battery life. That's a lot of new parts in a familiar case -- but do they add up to something more than just a speed bump? Read on for our full review! %Gallery-117510%
MacBook Pro (early 2011) with Thunderbolt hands-on
We just got our new 15-inch MacBook Pro review unit, and although it looks almost exactly the same as the previous MBP, it has that fancy new Thunderbolt icon on the side, which ought to make I/O nerd hearts flutter the world over. Unfortunately, there aren't any Thunderbolt peripherals on the market yet, so we can't really test the new connection yet, but we can report that backwards compatibility with Mini DisplayPort performs as advertised and that all of our display adapters worked without issue -- the first time we can ever remember Apple switching a standard and not requiring all new dongles. As for performance, we were given the $2,199 configuration with a 2.2GHz quad-core Sandy Bridge Core i7, discrete AMD Radeon HD 6750M graphics, 4GB of RAM and a 750GB HD, which clocked a preliminary GeekBench score of 9647. We'll have tons more testing in our full review, including detailed comparisons of the discrete chip with Intel's new integrated HD Graphics 3000. Apple did give us a quick demo on the new system with a prototype Promise RAID unit and a stock Cinema Display connected over Thunderbolt -- remember, Thunderbolt just uses a Mini DisplayPort connector, so displays can be daisy-chained right in. Apple's demo was a variation of the same thing Intel's been doing for a while -- they played four uncompressed HD video streams off the RAID simultaneously, which pegged the Thunderbolt throughput meter at 600-700MBps. We also watched a 5GB file transfer in just a few seconds -- all very impressive, but we're definitely anxious to try some of this stuff ourselves once Thunderbolt devices start shipping sometime in the spring. Apple also told us that Thunderbolt is running on copper and not optical cables (like the Light Peak protoypes) so that it can support bus-powered devices -- there's 10 watts of power available on the bus, up slightly from FireWire's 8 watts. Up to six devices can be daisy-chained from one port, and since Thunderbolt is based on PCI Express, it can even support FireWire and USB adapters. That's great news for the future of the interface, but the MacBook Pro still has two USB 2.0 and one FireWire 800 port, so it's not of critical importance right this second. We'll have much, much more in our full review -- check back in a few days! Update: We got a closer look at Thunderbolt working with some peripherals this afternoon -- believe us, you don't want to miss the video demo. %Gallery-117510%
