The Intel Core i3 530 Review - Great for Overclockers & Gamers
by Anand Lal Shimpi on January 22, 2010 12:00 AM EST- Posted in
- CPUs
Overclocking Intel’s HD Graphics - It Works...Very Well
The coolest part of my job is being able to work with some ridiculously smart people. One such person gave me the idea to try overclocking the Intel HD graphics core on Clarkdale a few weeks ago. I didn’t get time to do it with the Core i5 661, but today is a different day.
Clarkdale offers three different GPU clocks depending on the model:
| Processor | Intel HD Graphics Clock |
| Intel Core i5-670 | 733MHz |
| Intel Core i5-661 | 900MHz |
| Intel Core i5-660 | 733MHz |
| Intel Core i5-650 | 733MHz |
| Intel Core i3-540 | 733MHz |
| Intel Core i3-530 | 733MHz |
| Intel Pentium G9650 | 533MHz |
The Core i5 661 runs it at the highest speed - 900MHz. The rest of the Core i5 and i3 processors pick 733MHz. And the Pentium G6950 has a 533MHz graphics clock.
Remember that the Intel HD Graphics die is physically separate from the CPU die on Clarkdale. It’s a separate 45nm package and I’m guessing it’s not all that difficult to make. If AMD can reliably ship GPUs with hundreds of shader processors, Intel can probably make a chip with 12 without much complaining.
So the theory is that these graphics cores are easily overclockable. I fired up our testbed and adjusted the GPU clock. It’s a single BIOS option and without any changes to voltage or cooling I managed to get our Core i3 530’s GPU running at 1200MHz. That’s a 64% overclock!
I could push the core as high as 1400MHz and still get into Windows, but the system stopped being able to render any 3D games at that point.
I benchmarked World of Warcraft with the Core i3 running at three different GPU clocks to show the potential for improvement:
| CPU (Graphics Clock) | World of Warcraft |
| Intel Core i5 661 (900MHz gfx) | 14.8 fps |
| Intel Core i3 530 (733MHz gfx) | 12.5 fpx |
| Intel Core i3 530 (900MHz gfx) | 14.2 fps |
| Intel Core i3 530 (1200MHz gfx) | 19.0 fps |
A 64% overclock resulted in a 52% increase in performance. If Intel wanted to, it could easily make its on-package GPU a lot faster than it is today. I wonder if this is what we’ll see with Sandy Bridge and graphics turbo on the desktop.
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gfredsen - Monday, January 25, 2010 - link
I know this borders on thread crapping, but can someone tell me why Fry's is selling the newer 45 Watt AMD cpus and virtually no one else.I post this here, because for the price I still believe the AMD solution to be the best for how I use a computer, HTPC and SOHO.
Add in the price of a MB, DDR3 which I don't have and the Intel i3 still offers me no advantage that I can see.
I'll pass for now.
papapapapapapapababy - Sunday, January 24, 2010 - link
"From Intel the closest competitor is the Core 2 Duo E7600, which runs at 3.06GHz but with a 3MB L2 cache"lol my old retro E6600 runs at 3.2GHz also has 4MB L2 cache, and smokes my 3,2GHZ E7300 in photoshop... intel am fail.
smilingcrow - Sunday, January 24, 2010 - link
If you can't get more than 3.2 from your E7300 sounds like your motherboard = fail.papapapapapapapababy - Sunday, January 24, 2010 - link
diminishing returns, girl.smilingcrow - Tuesday, January 26, 2010 - link
Hi girl, I don't really need to know your gender and the fact that you aren't very good at over-clocking might reinforce in some peoples’ minds that the fairer sex aren’t so good with tech. Anyway, take a look at the forums at overclockers.com so you can get the best out of that CPU.Fjodor2000 - Saturday, January 23, 2010 - link
Anand, is there any way you could provide reliable measurements for the Core i3-530's Idle Power Consumption when only the IGP is used? One of your earlier articles (http://www.anandtech.com/cpuchipsets/showdoc.aspx?...">http://www.anandtech.com/cpuchipsets/showdoc.aspx?... indicated that it could reach as low as 27.6 W (!), however in that article there were no details on what Clarkdale CPU was used or other details of the system used.- Saturday, January 23, 2010 - link
Your going to need a mini-ITX board, some Gskill 1.35v memory, a SSD, a pico-PSU (probably with 100w brick) to have any chance of reaching 27.6w idle.I know for a fact that Intel used Gskill 1.35v memory (there was an article about it somewhere)and I'm sure they used every trick in the book to get the idle power down that low. I looked on Newegg for a mini-ITX board and couldn't find one so your probably going to have to wait if you want the ultimate power sipping HTPC.
smilingcrow - Sunday, January 24, 2010 - link
The G.Skill Eco RAM (1.35V) has a negligible impact on idle power consumption according to the only review I’m seen which isn’t surprising as a single RAM stick at stock voltage doesn’t consume much to start with. At load the test showed gains of between 3 and 5W.I’m not a fan of this site but it’s the only review I could find and probably even they couldn’t screw this up; on second thoughts…
http://www.fudzilla.com/content/view/16833/1/1/3/">http://www.fudzilla.com/content/view/16833/1/1/3/
Fjodor2000 - Sunday, January 24, 2010 - link
I see. It would be really interesting to see if it can be reproduced, and just how low it is possible to get the power consumption using such a system as you described.Also, I think it would be interesting to see the Idle Power Consumption with IGP Only, for a more "normal" system. I.e. uATX motherboard (without Idle power issues!), Intel i3-530 CPU, 4 GB RAM, ~1 TB low power HDD, and NO external GFX-card (the review for some reason currently only contains Idle power consumption when used with an external GFX card).
Anand, do you think it would be possible to run an idle power consumption test for the core i3-530 setup you used, but without an external GFX card? After all, I suppose that will be the common setup for most i3-530 based systems?
kwrzesien - Monday, January 25, 2010 - link
I just built a 530 system with the Gigabyte GA-H55M-UD2H board, Artic Freezer 7, a WD 640 GB Blue, LG BDROM/DVDRW, 4 GB Mushkin (2 x 2GB 1600 C9) RAM with an Antec 380D Green PSU in a P180 mini case (200mm, 120mm fans on low). Terrific build, everything works great except the Freezer is blocking the first DIMM slot so installing a second pair of sticks is going to be a problem.Idle power at Win7 desktop, all stock settings, no discrete video card, is 41W! I was expecting ~60W so I'm really surprised, this puts my Core i7 920 to shame - but that is also my 'everything' box. I highly recommend this entire setup except maybe the Freezer - it is just too bulky in the fan cage. Don't go bigger on the PSU unless you need more than one 6-pin PEG connector or are installing 4+ hard drives. Next build (ordering today) will be the same with an SSD and 1TB Green drive...