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Switchable Graphics - Meet the Contenders

Before we get to the actual meat of this review, we have a disclaimer to make: both laptops we’re comparing came to us via NVIDIA. Now, before anyone cries “foul!”, let me explain. First, we asked AMD for just such a laptop back in May, and they haven’t been able to get us one yet (though it’s likely as much the fault of OEMs as AMD). We also only just received our first Sony laptop (from Sony) in a long while, and we received the VAIO C from NVIDIA first. Finally, the laptops came boxed up, unopened, with all the standard fluff you’d expect from retail notebooks.

After unboxing, we did our usual thing: create a new user account, and then commence uninstalling the bloatware—and yes, the Sony VAIO C and Acer TimelineX 3830TG both have a lot of it!—and when all that is done and we’ve shut off any unnecessary applications and utilities, we start installing our benchmark suite. After that’s done, we do a full defrag (using Defraggler) and then we can start testing. Despite the source of the laptops, then, we are confident that both are reasonable representations of what you’ll get—actually, the TimelineX 3830TG has some issues with throttling in games, so if anything NVIDIA’s choice for their own platform wasn’t the best, though the Sony VAIO C may not be the greatest AMD offering either.

In terms of other alternatives, while there are dozens of currently shipping Optimus laptops (ASUS, Clevo, Dell, HP, MSI, Samsung, Sony, Toshiba, and others are all onboard with the platform), finding laptops with Intel CPUs and AMD dynamic switchable graphics is a lot more difficult. Sony has the VAIO C—the VAIO S we recently reviewed doesn’t support dynamic switching, instead using the older manual switching—Dell has the Vostro 3450/3550, and HP has it with certain dv6/dv7 series laptops using 6700M GPUs. Meanwhile, 6300M (rebadged 5400M), 6500M (rebadged 5600/5700M) and 6800M (rebadged 5800M) can't support dynamic switching, and no one is trying to do it on 6900M. (Note: I’ve looked around for more details on which laptops support AMD’s Dynamic Switchable Graphics and came up empty, but if anyone can find a comprehensive list I’ll be happy to post it.) There may be a few other laptops out there with Intel CPUs and AMD 6000M GPUs, but there definitely aren’t as many options.

We’ll be running a few benchmarks later, so while we’re on the subject of laptops, let’s go over the full specs. Starting with the AMD Sony VAIO CA laptop, here’s what we have:

Sony VAIO CA (VPCCA290X)
Processor Intel Core i5-2410M (dual-core 2.30-2.90GHz, 35W)
Chipset Intel HM65
Memory 2x2GB DDR3-1333 (CL9)
Graphics AMD Radeon HD 6630M 1GB
(480 Cores at 485MHz, 128-bit DDR3 at 1600MHz) Intel HD 3000 Integrated Graphics AMD Dynamic Switchable Graphics
Display 14.0” WLED Glossy 16:9 768p (1366x768)
Hard Drive(s) 320GB 5400RPM HDD
(Western Digital Blue WD3200BPVT-55ZEST0)
Optical Drive 8X Tray-Load DVDRW (Optiarc AD-7710H)
Networking Gigabit Ethernet (Atheros AR8151)
802.11n WiFi (Intel WiFi Link 1000 BGN)
Audio 2.0 Speakers
Microphone and two headphone jacks
Capable of 5.1 digital output (HDMI/SPDIF)
Battery 6-cell, 11.1V, ~5.3Ah, 59Wh
Front Side Memory Card Reader
Wireless On/Off Switch
Left Side Kensington Lock
1 x USB 2.0
1 x USB 3.0
HDMI
VGA
Exhaust vent
Ethernet
AC Power Connection
Right Side Headphone Jack
Microphone Jack
2 x USB 2.0
Optical Drive
Back Side N/A
Operating System Windows 7 Home Premium 64-bit
Dimensions 13.43" x 9.26" x 1.10-1.43" (WxDxH)
341 mm x 246 mm x 28-36 mm (WxDxH)
Weight 5.41 lbs / 2.46 kg (6-cell)
Extras HD Webcam
82-Key backlit keyboard
Three Sony quick-access keys
Flash reader (SD, MS HG Duo)
Sony Bloatware! :-)
Warranty 1-year standard warranty
Pricing Starting Price: $730
Price as configured: $930

Gallery: Sony VAIO CA

The OEM-only i5-2410M is a good entry-level Sandy Bridge processor, and pricing is only slightly higher than the base model i3-2310M (which is clocked at 2.1GHz and lacks Turbo Boost support). 4GB RAM is fine, and the HD 6630M is actually a fairly potent mobile GPU as we’ll see in a moment. The big problems with the VAIO CA are that it comes with a slow and rather outdated 320GB 5400RPM hard drive (Western Digital Blue) and it also has a ton of bloatware. The bloatware can be uninstalled, and we did that as our first priority, but the hard drive tended to be an ongoing concern. AMD’s Catalyst Control Center for instance pops up in a couple seconds on my desktop (Bloomfield + SSD + HD 6950), but on the VAIO C there are times when it can take upwards of 30 seconds (with the HDD activity light a solid orange). Games also tended to take a bit longer to load than we’re used to. Outside of those two areas, the VAIO C is pretty much standard consumer laptop fare: glossy 1366x768 LCD, decent but not exceptional build quality, and average speakers. The keyboard is decent, though I’d still prefer dedicated document navigation keys (rather than the Fn+cursor combinations Sony uses), and it does have nice backlighting.

Acer TimelineX 3830TG-6431
Processor Intel Core i5-2410M (dual-core 2.30-2.90GHz, 35W)
Chipset Intel HM65
Memory 2x2GB DDR3-1333 (CL9)
Graphics NVIDIA GeForce GT 540M
(96 SPs, 672/1344/1800MHz Core/Shader/RAM clocks) Intel HD 3000 Integrated Graphics NVIDIA Optimus Technology
280.26 WHQL Drivers
Display 13.3” WLED Glossy 16:9 768p (1366x768)
Hard Drive(s) 500GB 5400RPM HDD
(Western Digital Blue WD5000BPVT-22HXZT1)
Optical Drive N/A
Networking Gigabit Ethernet (Atheros AR8151)
802.11n WiFi (Atheros AR5B97)
Audio 2.0 Speakers
Microphone and two headphone jacks
Capable of 5.1 digital output (HDMI/SPDIF)
Battery 6-cell, 11.1V, ~6.0Ah, 66Wh
Front Side Memory Card Reader
Battery Check Button
Left Side 1 x USB 3.0
1 x USB 2.0
HDMI
VGA
Exhaust vent
AC Power Connection
Right Side Headphone Jack
Microphone Jack
1 x USB 2.0
Ethernet
Kensington Lock
Back Side N/A
Operating System Windows 7 Home Premium 64-bit
Dimensions 12.64" x 9.0" x 1.15" (WxDxH)
321 mm x 229 mm x 29 mm (WxDxH)
Weight 4.08 lbs / 1.85 kg (6-cell)
Extras Webcam
86-Key keyboard
Flash reader (SD, MMC, xD, MS Pro)
Acer Bloatware
Warranty 1-year standard warranty
Pricing MSRP: $780
Online starting at $700

On the other side of the table is Acer’s TimelineX 3830TG-6431, priced over $200 cheaper than the Sony. Acer has a habit of releasing laptops and then discontinuing them not long after, only to replace them with slightly different models, so we can’t guarantee the 3830TG-6431 will always be in stock; however, it appears readily available right now. The AS3830TG-6431 has on serious problem, unfortunately: the CPU tends to throttle down to 1.2GHz when gaming as the CPU and GPU end up creating more heat than the system cooling can handle. That’s a real shame, as if it weren’t for the throttling there would be a lot to like with the 3830TG.

For one, the floating island keyboard I detest so much on other Acer/Gateway laptops is gone, replaced by a chiclet-style keyboard. There’s a bit of flex but I can live with it, and the layout is good (except for the crazy backslash-joined-to-the-enter-key weirdness). This is also a very thin and light laptop, helped by the absence of an optical drive, and the dimensions would be very impressive given the i5-2410M CPU and GT 540M GPU if it weren’t for the thermal throttling problem. Acer gives the TimelineX an aluminum cover and palm rest as well, but the LCD is one of the worst I’ve used (poor viewing angles and weak colors, plus our sample has a red pixel in the middle center of the LCD that’s stuck).

Because of the throttling issue, the 3830TG benchmarks aren’t the best representative of what you can get from NVIDIA’s GT 540M. We’ll include two other laptops with the GT 540M (and Optimus) in most of our benchmarks as alternative reference points: the Alienware M11x R3 (i7-2617M CPU) and the Dell XPS 15 L502x (i7-2630QM). In theory, the i5-2410M should sit somewhere in between these two in terms of performance, but the throttling drops it lower in most tests. However, if you’re willing to play around with a utility like ThrottleStop, you can actually get the CPU to run at a constant 2.1GHz without any throttling (basically using the i5-2410M as an i3-2310M CPU). We tested with ThrottleStop set at 2.1GHz along with running “stock” (e.g. with throttling) to provide a couple more points of reference in our gaming results.

How AMD’s Dynamic Switchable Graphics Works
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91 Comments

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  • tipoo - Tuesday, September 20, 2011 - link

    "The bigger issue of course is that AMD needs to get their laptop partners—Sony in this case—to release regular driver updates, and to use up-to-date driver builds when laptops launch."

    AMD now lets you get laptop drivers from their own site, and they are always as up to date as the desktop ones. Unless Sony opted out of that for whatever reason?
    Reply
  • OCedHrt - Tuesday, September 20, 2011 - link

    These drivers do not work for switchable graphics. nVidia had the same issue before Optimus. Reply
  • orangpelupa - Wednesday, September 21, 2011 - link

    the driver is work for switchable graphic.

    my acer laptop with switchable intel + HD Mobility 5650 is updateable.

    use the 11-8_mobility_vista_win7_64_dd_ccc.exe
    not the a few KB .exe auto detector from ATi. This app is useless.

    but if failed to install using the main almost 100MB .exe, usually it stil can be isntalled using modded .inf.

    just make sure to Switch to dGPU mode before running any installation driver.
    Reply
  • orangpelupa - Wednesday, September 21, 2011 - link

    modded inf and the download link for mobility 11.8 generic ATi
    http://wp.me/pyhfN-m1
    Reply
  • The0ne - Wednesday, September 21, 2011 - link

    I wouldn't say useless as the full package download refuses to installed properly on my M17xR2 and the only way for the driver to work is for me to use their auto detector and downloader. This for some reason downloads a slightly different package (size is less I believe) but it works. Reply
  • mfenn - Tuesday, September 20, 2011 - link

    Did you even read the article? Jarred mentioned that they did on several occasions. Hell, he even devoted an entire page to the issue! Reply
  • mczak - Tuesday, September 20, 2011 - link

    I'm wondering if you can still "make your own driver". This is exactly what I did for a Thinkpad T400 with switchable graphics, since the provided driver was so old and buggy. The "monolithic" driver isn't really all that monolithic, it basically consists of a standard AMD mobility driver (which you just can download if you have the real download link) plus a standard intel driver in the same package. Though the .inf file needs to be hacked up.
    (So I used an old switchable driver to see what the .inf looked like, plus a new intel and amd mobility driver to make up the new version - worked quite ok except some driver signing warnings, and some bogus mux-switching upon suspend/resume with multimon though I don't think this worked before neither.)
    I'd venture a guess and suspect this would still work with the muxless solutions, but it's a huge pain in the ass obviously and AMD really needs to fix this and just have drivers which work on all mobile gpus, the OEMs will NEVER get it right otherwise, they won't care if AMD gives them new drivers monthly or not they will simply not bother to supply updated drivers.
    Reply
  • bjacobson - Tuesday, September 20, 2011 - link

    even if they up to date, that's no guarantee that they're going to work for the first 6 or so months. I've never had much luck getting everything on AMD to work the first time-- crossfire with dual monitors doesn't work on 2x 5770 with Quake Wars : Enemy Territory (had to disable the 2nd display); alt-tab still doesn't work in Unreal Tournament 3 without crashing the game (not in crossfire, just 1x4890); and it took them several months after switching their user interface to that new one to package back in the under/overscan ability on the embedded graphics that came on the motherboard we used for our HTPC...just lots of stuff that's always 95% complete with 5% broken that ends up being really annoying.

    IE, I wouldn't be surprised if somewhere in between suspend, hibernate, plugging in an external monitor, and this dynamic GPU solution, that something won't work quite right for about 6 months...but that's just my gut speaking judging by what I've seen before. I'm a big fan of underdogs and still cheer for AMD, but I do have to say Nvidia's drivers (since about 8800GT which is as early as my experience goes) have simply worked with all those quirky setups we needed and didn't end up breaking later when installing an updated driver.
    Reply
  • OCedHrt - Wednesday, September 21, 2011 - link

    I've always had to overscan/underscan available as an option for integrated graphics for the last 2 years+. Yet I've always had problems with nVidia, especially on stability. I don't think the stability is always tied directly to the gpu and drivers. Reply
  • Aloonatic - Tuesday, September 20, 2011 - link

    Is that just for more recent mobility radeon systems?

    Just the other day, I was looking to update a laptop with a 4570, but it wouldn't update anything other than the good old CCC.

    (I was a Dell Studio 17, by the way :o) )
    Reply

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