Display Quality
The last area we want to test is the display quality. We have stated repeatedly that laptop LCDs pale in comparison to typical desktop LCDs, and unfortunately we see that trend continue. We test color accuracy using ColorEyes Display Pro, and we test with two different colorimeters. The first is a DTP-94 we have been using for some time, but we have added an i1 Display2. We test both colorimeters with ColorEyes Display Pro, generating both LUT and Matrix color profiles. The reason we do this is that some displays respond better to LUT profiling while others work better with Matrix profiling. We select the best result out of the four tests for our color accuracy charts. The change from Monaco Optix XR has also invalidated our previous color gamut results, so we will only have color gamuts for select laptops. (We use the matrix color profiles for gamut, as they usually have ~10% higher gamut volume.) We will also report the maximum LCD brightness and contrast ratio.
Out
of these three laptops, the ASUS G50V is the clear winner. In fact,
when you consider contrast ratio it's not even close. Color accuracy is
actually quite good on all three laptops (though still not at the level
of what we see on a decent desktop LCD), but color gamut is another
extremely weak point of laptop LCDs. The poor contrast ratio results
for the ASUS U6V in particular are disappointing; we had hoped that all
LED backlit panels would show improved contrast ratios and color
gamuts, but clearly that's not the case. Given the choice, however, we
would still take the Acer 6920G LCD over any of the other current
offerings.
Also worth mention is that the trend to use glossy panels continues; all three of these laptops come with glossy panels - the HP dv5t unit has a "designer glass cover" similar to what we see on the newest Apple MacBooks - so reflections can be a problem. Using any of these notebooks indoors never bothered us, however, and outside of the HP they don't seem to be quite as reflective as the Apple offerings.
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JarredWalton - Friday, October 24, 2008 - link
I chatted a bunch with ASUS on this; there was some confusion so I may have ended up with the wrong conclusion. (Yeah, marketing wasn't positive on the specs, and engineering didn't ever pass on the exact details.) I actually had a paragraph detailing the differences between the 9800M GTS and this supposed 9800M GS. Since I don't have one in my hands, I can't say one way or the other with certainty.The worst case would appear to be clock speeds equal to that of the 8800M GTS (500 core instead of 600 core on the 9800M GTS), which is still going to be a lot faster than these other notebooks. Since it's also limited to 1366x768, gaming performance should be no problem at native res... but there's a lot of headroom left untapped. Certainly, gaming performance won't be lower than the G50V tested here, unless the game happens to be CPU limited.
Enrox - Friday, October 24, 2008 - link
Take a look at the Gateway P-7811 battery's life: it's about 150 minutes regarless the task (DVD playback, web surfing, H.264 playback).That to me says only one thing: no power management in place.
Is that a Vista issue or a BIOS issue?
JarredWalton - Friday, October 24, 2008 - link
Oh, the P-7811 is definitely doing *something* - though idle battery life is lower than I'd expect relative to the others. Actually, I think it's more that the P-7811 is doing quite well in other tasks. Remember: 17" 1920x1200 LCD, 7200 RPM HDD, and a 9800M GTS put it at a much higher power envelope than most of the other laptops. Relative to the P-6831 and m15x, the results seem to be right where you'd expect. If only Gateway had implemented Hybrid Power....jonmcc33 - Friday, October 24, 2008 - link
Did you verify that with the Power Saver setting that EIST was working properly? Use CPU-Z or similar to see if the clock speed of the FSB and CPU does change as it should. Check the BIOS settings as well.CU - Friday, October 24, 2008 - link
Yes it would be interesting to know what the cpu, gpu, fsb, and ram clocks are at when in power saving mode for Vista and OSX.JarredWalton - Friday, October 24, 2008 - link
CPU speed drops to a 6X multiplier, so at least that aspect is working. Looking at the voltages (according to CPU-Z), they're all at 1.083V except for the G50V, which runs at 1.338V most of the time. (I'm still trying to figure out what's going on there and will update when I know more.) I'm not as concerned with G50V battery life, though, since it's in a different class of performance and size; it's the U6V and similar notebooks that need to do a lot better.Regarding RAM, GPU, and FSB, the FSB stays locked at the base speed - 1066 MHz on the Centrino 2 notebooks. RAM likewise stays at a set speed, in this case 800 MHz. 2D GPU clocks (according to GPU-Z) are 169 MHz core, 200 MHz (100 base) VRAM on all three of these notebooks. GPU-Z also reports a memory clock of 800 MHz (400 base) for the HP dv5t, which seems wrong - I though the 9600M GT was supposed to be much faster RAM, but apparently not.
JarredWalton - Friday, October 24, 2008 - link
Update: The G50V was back on "High Performance" mode after rebooting (an issue with some of the ASUS software). Setting it back to "Balanced" or "Power Saver" dropped the CPU voltage to the expected voltage - though still slightly higher than the others at 1.063V.fabarati - Friday, October 24, 2008 - link
Asus is known for their crappy batterylife in the latest generation. When compared to equal or even better specced laptops, they fall flat on the ground. It's probably because of bad ACPI coding. My F8Sa has worse battery life than my old A8Js, despite having less powerhungry parts. And the A8Js had mediocre batterylife (I reached about 3½ hours, with hardware disabled). I can barely break 2 hours, and that's when I disable hardware.The HP DV5 seems to suffer from the same issue, at least that's the conclusion we came to when it was tested by NBR.
JarredWalton - Friday, October 24, 2008 - link
I haven't tested a comprehensive selection of laptops by any means, but if you look at the specs for the various laptops and the resulting Minutes/Whr chart you can see that if this is bad ACPI coding the practice extends far beyond just ASUS and HP. If the MacBook Pro was around 3 or 4 Min/Whr, I'd think maybe it was just some fine tuning that was missing, but it's still literally double what the closest tested Vista laptop managed.The best result I've personally seen on Vista to date is the http://www.anandtech.com/mobile/showdoc.aspx?i=328...">ASUS U2E, which manages 3.72 Min/Whr with the 86.5 Whr battery. That's a lot closer than the other laptops, but keep in mind that has a U7500 CPU (10W max TDP), X3100 IGP, and an SSD, plus an 11.1" LED LCD.
Another 15.4" laptop I'm currently testing with T7250 and X4500 graphics (plus 4GB RAM, 250GB 5400RPM HDD) manages 4.18 Min/Whr, which is closer to Apple. Still, that's a 50% advantage for the MacBook, so it's not really *that* close. (It gets 204 minutes of battery life in our web surfing test.)
nizanh - Friday, October 24, 2008 - link
Can't you just install Vista on one of the MacBooks?Sounds to me like the best testing methodology.