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UltraBook CPUs performance?!?

post #1 of 5
Thread Starter 
So I just bought an Asus Zenbook.
Details:
  • i5 3317U (17 watt cpu)
  • 4 gig ram
  • Sandisk 128 SSD U100
  • 13inch IPS 1080p

so that is what i have. Pretty good device. Not really blown away by it, but are these things supposed to compare to regular laptops? It's kind of choppy to scroll up and down websites while it's still loading, and if I watch a 4k youtube video, it's 99% full CPU usage and very laggy. Maybe it's faster than the usual ultrabook, just hard to get used to this performance considering i'm so used to my i5 2550k @ 4.3 ghz redface.gif

here's the main point of this thread....Is there a big noticeable difference between the model I have and THIS?
The model in consideration has an i7 3517U. The 256ssd hard drive is a big plus, but mainly, it's not that important unless the CPU is up to the task. Is there a big difference between i5 3317 and an i7 3517???

Is the battery life basically the same?

Need to know soon so I can return my current ultrabook to microcenter if I have too and spend the extra 500 for the better model. Thank you smile.gif
Edited by lacrossewacker - 8/27/12 at 5:08pm
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post #2 of 5
The behavior you're describing does not sound normal. I just tested a very similarly specced ultrabook (i5 3317U, 4 GB RAM, 128GB U100, but with a 1366x768 display) and none of the CPU cores exceeded 20% while playing a 4k YouTube video.
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post #3 of 5
This is really unusual, have you checked your battery settings, and all power saving settings?
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by Kota View Post

The behavior you're describing does not sound normal. I just tested a very similarly specced ultrabook (i5 3317U, 4 GB RAM, 128GB U100, but with a 1366x768 display) and none of the CPU cores exceeded 20% while playing a 4k YouTube video.

Really? Is that with "Original" setting on for the full 4k?
for me....
480p uses 7-10% cpu, seems normal
720p uses roughly 7-14%
1080p uses 15-20%
.....


OHHHH okay just figured it out. Noticed a huge difference when I plugged my zenbook in. Looked into the power options, and even with the "high performance" selected, the max cpu usage on battery was 80%. That was just enough to screw it all up. Now it's all up to normal. Let me do some more test driving with this. If this fixes everything, then yay good for me, but am I missing out on much with that i7 3517U?
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Main Rig
(13 items)
 
Secondary Rig
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CPUMotherboardGraphicsGraphics
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RAMHard DriveHard DriveOptical Drive
Ripjaw  Samsung F3  Samsung 830  Asus CD-Rom 
CoolingMonitorMonitorPower
Cooler master hyper 212+  Asus  27in 1440p Auria EQ276W 760 Watt Silencer 
Case
Haf 912 
CPUMotherboardGraphicsGraphics
i7 3770k ASRock Z77 Pro4-M 290 XFX DD R9 280X Gigabyte 
GraphicsGraphicsRAMHard Drive
R9 280X MSI Gaming R9 280X Power Cooler Crucial Ballistix  Samsung 830 series 
Hard DriveOptical DriveOSMonitor
WD Black Asus 24x Windows 7 Asus 24in  
MonitorPowerCase
27in 1440p Auria CM 750 600T 
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post #5 of 5
Quote:
Originally Posted by lacrossewacker View Post

here's the main point of this thread....Is there a big noticeable difference between the model I have and THIS?
The model in consideration has an i7 3517U. The 256ssd hard drive is a big plus, but mainly, it's not that important unless the CPU is up to the task. Is there a big difference between i5 3317 and an i7 3517???
Is the battery life basically the same?
Need to know soon so I can return my current ultrabook to microcenter if I have too and spend the extra 500 for the better model. Thank you smile.gif

These processors are very similar. I've included a link to a comparison chart below. Basically, the i7 has 1 MB more L3 cache, 200 MHz more base frequency, and 400 MHz more turbo frequency. We're probably talking about a 10% performance difference, depending how you use your laptop. That hardly seems like a $500 price premium, even with the larger SSD factored in.
http://www.cpu-world.com/Compare/865/Intel_Core_i5_Mobile_i5-3317U_vs_Intel_Core_i7_Mobile_i7-3517U.html

I don't know which model of Zenbook you have, but the few I've looked at have the RAM soldered in (not upgradeable) and use an mSATA SSD, which tend to be both more expensive and slower than the 2.5" equivalent. I just want to make you aware of these limitations while you're still within your return period.
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Intel C2Q X3380 @ 4.0 GHz Foxconn BLACKOPS X48 XFX 7870 Double D Black Edition 2 GB 8 GB G.Skill RipjawsX DDR3-2133 
Hard DriveCoolingPowerCase
Samsung 840 250GB Corsair Hydro H50 Push/Pull Corsair HX620 Silver AeroCool Masstige (Modded) 
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Kota's Rig
(8 items)
 
  
CPUMotherboardGraphicsRAM
Intel C2Q X3380 @ 4.0 GHz Foxconn BLACKOPS X48 XFX 7870 Double D Black Edition 2 GB 8 GB G.Skill RipjawsX DDR3-2133 
Hard DriveCoolingPowerCase
Samsung 840 250GB Corsair Hydro H50 Push/Pull Corsair HX620 Silver AeroCool Masstige (Modded) 
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Reply
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