LG Optimus 2X first encounter: How fast is Tegra 2?

How fast is Tegra 2?

GSMArena team, 1 February 2011.

This article is outdated. We have already published a full review.


There is an important note to make before we proceed with the LG Optimus 2X benchmark results. At this point (2.2 Froyo) the Android OS isnít capable of making the best use of dual-core processors. That means that the second core is merely acting as an assistant to the first, rather than taking over half of the work.

Android 2.3 Gingerbread is hardly any different so until 3.0 Honeycomb updates start hitting dual-core smartphones (if at all), those wonít be living up to their full potential.

Despite this fact, the Nvidia Tegra 2 still represents a worthy upgrade over any of the existing chipsets.

See, the dual-core architecture isnít the only thing that Tegra 2 brings on the table. There is also the completely new Cortex-A9 core inside (two of them actually) and that makes quite a difference.

We also shouldnít forget the GeForce GPU that outperforms the currently existing smartphone GPU units and even delivers hardware acceleration support for Adobe Flash.

A vital part of the Tegra 2 SoC is also the powerful dedicated video decoding chip that makes possible watching 1080p video on the smartphone.

You can read all about the Tegra 2 platform in our dedicated scoop.

So essentially, the Optimus 2X can outperform any of the currently existing processors by a significant margin even with one hand tied behind its back. Hereís a quick comparison between the Optimus 2X calculating muscle and the Galaxy S (running on Android 2.2 Froyo) Cortex-A8 CPU on some popular benchmarks.

LG Optimus 2X LG Optimus 2X
Quadrant: LG Optimus 2X ē Samsung I9000 Galaxy S

LG Optimus 2X LG Optimus 2X
Neocore: LG Optimus 2X ē Samsung I9000 Galaxy S

LG Optimus 2X LG Optimus 2X
Linpack: LG Optimus 2X ē Samsung I9000 Galaxy S

LG Optimus 2X LG Optimus 2X
BenchmarkPi: LG Optimus 2X ē Samsung I9000 Galaxy S

Update, 02 June: We updated our Optimus 2X with the latest firmware available at the moment (V10B) and ran new tests. We compared the 2X against the Samsung Galaxy S II and Galaxy S Plus. Here are the results - for more, you can check out our dedicated head-to-head article.

Javascript performance

We also decided to compare the Javascript performance of the Optimus 2X and Samsung I9000 Galaxy S. To give you a better perspective we also included the results of a first-gen Atom CPU clocked at 1.6 GHz, the Apple iPad A4 platform that has a 1GHz Cortex A8 core and the 1.2 GHz VIA C7-M ULV CPU.

LG Optimus 2X

As you can see the Optimus 2X passed the test with flying colors, outdoing the two mobile processors, beating one of its desktop siblings and getting pretty close to the other.

Update, 02 June: We retested JavaScript performance too, but since the original test we used is now defunct, we used other tests - SunSpider and BrowserMark. Again, the LG Optimus 2X is competing against the Samsung Galaxy S II and Galaxy S Plus. You can check out our new head-to-head article for more on the web browsers of the three phones.

Real-life experience

Having seen all these numbers, you probably expect to hear that the LG Optimus 2X is much faster than the current crop of Android smartphones in each and every task, but we are afraid we will have to disappoint you here.

In real life the Optimus 2X feels buttery smooth but it doesnít feel much different than the Samsung Galaxy S, for instance. The Samsung flagship is pretty smooth already and there is not much room for improvement in terms of pure UI responsiveness.

Itís resource-heavy games where the differences should become prominent, but at this point there arenít too many of those around the Android market. And those that do exist run well enough on the current single-core 1GHz CPUís so you wonít be able to tell the difference Ė not with only one core enabled anyway.

We guess the first titles that would really make the difference prominent are the ones that make use of the Tegra 2 advanced GPU. Nvidia already announced that weíll see Android games using the Unreal 3 engine (Dungeon Defenders) and perhaps even the iDTech 5 engine (Doom 4 and Rage) and the Frostbite engine (Battlefield: Bad Company).

It will take some time to see the software make use of the hardware, but once itís done, the Tegra 2 will be the go-to Android platform for gaming. So thereís no question that the Optimus 2X is way better future proofed than its single-core contemporaries.

Update: We've shot a new video demo using a retail LG Optimus 2X running the latest firmware available as of June 2010 (version V10B).

First impressions

We are pretty pleased with the LG Optimus 2X for the short time we spent with it. The handset proved that it has plenty of oomph under the hood and it should be able to meet the needs of the most demanding software for quite some time to come.

However if you are expecting to see some major upgrade over your current Android flagship you might be a bit disappointed. See the Optimus 2X is more of an investment in the future that should remain up to date for at least another year (unless LG fails to deliver on the software update end) than a great value-for-money purchase right now.

Reader comments

  • roli

LG Optimus 2X will be recorded in history as the first dual-core phone but I'm afraid the spotlight will be taken by Samsusng GalaxySII, Apple Iphone5 and Motorola Atrix. Possibly LG's own Optimus 3D will match up with the other phones but hmm who kn...

  • yash

If you're an Android App developer.... Would you program for the TWO dual core platforms? OR the 50 bajillion 1ghz phones? I think I would rather sell to the mass market. Like the review says, dual core phones is an investment for the future... ...

  • naved

if u have such a smartphone like optimus 2x so i will not look at the battery life.iphne has jus 5 hrs of tlktme 2x has 7 hrs.It is bettrr thn iphne n galaxy s2.