Test Setup
Below are the tested configurations for the three laptops included in this roundup. We have included results from the Gateway P-7811 and three other midrange notebooks for comparison (with other results from previously tested laptops in non-gaming benchmarks). The seven primary notebooks included in the benchmarks all range in price from $1200-$1800 give or take.
| ASUS G50V Test System | |
| Processor | Core 2 Duo T9400 (2.53GHz 6MB 1066FSB) |
| Memory | 2x2048MB Hynix DDR2-800 (6-6-6-18) |
| Graphics | NVIDIA GeForce 9700M GT 512MB Driver version 176.23 (from ASUS) GPU/SP/RAM Clocks: 625/1563/1600 MHz (128-bit) |
| Display | 15.4" WSXGA+ (1680x1050) Glossy AU Optronics B154SW01 VB |
| Hard Drive | 2 x 250GB 5400RPM 8MB Western Digital Scorpio WD2500BEVS-22UST0 |
| Optical Drive | 8x DVDR SuperMulti (HL-DT-ST DVDRAM GSA-250N) |
| Battery | 6-Cell 53Whr |
| Operating System | Windows Vista Home Premium 64-bit |
| ASUS U6V Test System | |
| Processor | Core 2 Duo P8400 (2.26GHz 3MB 1066FSB) |
| Memory | 2x2048MB Nanya DDR2-800 (6-6-6-18) Note: 3GB usable in 32-bit Vista |
| Graphics | NVIDIA GeForce 9300M GS 256MB Driver version 176.23 (from ASUS) GPU/SP/RAM Clocks: 580/1450/800 MHz (64-bit) |
| Display | 12.1" WXGA (1280x800) Glossy LED Backlit Unknown Manufacturer |
| Hard Drive | 320GB 5400RPM 8MB Western Digital Scorpio WD3200BEVT-00ZCT0 |
| Optical Drive | 8x DVDR SuperMulti (HL-DT-ST DVDRAM GSA-U20N) |
| Battery | 3-Cell 26.5Whr 6-Cell 53Whr |
| Operating System | Windows Vista Business 32-bit |
| HP dv5t Test System | |
| Processor | Core 2 Duo T9400 (2.53GHz 6MB 1066FSB) |
| Memory | 1x2048MB Samsung + 1x1024MB Hynix DDR2-800 (6-6-6-18) |
| Graphics | NVIDIA GeForce 9600M GT 512MB Driver version 175.86 (from HP) GPU/SP/RAM Clocks: 500/1250/800 MHz (128-bit) |
| Display | 15.4" WXGA (1280x800) Glossy Samsung 154AT07-301 |
| Hard Drive | 250GB 5400RPM 8MB Toshiba MK2546GSX |
| Optical Drive | BD-ROM/DVDR (Optiarc BC-5500S) |
| Battery | 6-Cell 55Whr |
| Operating System | Windows Vista Home Premium 64-bit |
As in previous tests, we used an external monitor to run at resolutions above 1280x800 if necessary. We will focus specifically on 1280x800 gaming performance initially, but we will also include some resolution scaling charts to show how the GeForce 9600M GT and 9700M GT perform at other resolutions.
It's interesting to note that the Gateway P-7811 FX is the only Centrino 2 laptop we've seen so far that has made the switch to DDR3 memory. We're not sure how much of a difference that makes in battery life, but it certainly can't hurt (though prices are a bit higher than DDR2). Performance may also be slightly higher with DDR3 on some tests, but in most cases we don't think DDR3 would make more than a 2%-4% difference (and often less).
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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.