LG has unveiled Optimus 4X HD, its first quad-core device. The amazing power-packed smartphone comes with a powerful processor which could deal a killer blow. The 4.7-inch device will simply blow one's mind away with its pretty cool features.

On the other hand, the ultra-slim Samsung Galaxy S2 provides high-speed browsing with a dual-core processor. Nevertheless, it ensures a fast processing while downloading the games.

Here is a rundown of the specs comparison between both the powerful smartphones:

[1] Display

LG Optimus 4X HD flaunts an impressive 4.7-inch HD-IPS LCD capacitive touchscreen. It has a resolution of 1280x720 pixels at 312 pixels per inch (ppi).

In comparison, 4.3-inch Galaxy S2 includes a Super AMOLED display which provides an improved readability and better battery utilisation. It has a resolution of 800x480 pixels at 217 ppi.

[2] Processor

LG Optimus 4X HD features the super fast NVIDIA Tegra 3 chipset and a 1.5 GigaHertz Quad-core processor.

In contrast, Galaxy S2 is powered by 1.2 GigaHertz Dual-core CPU and Exynos chipset. The dual-core processor allows high-speed browsing and rapid multi-tasking.

[3] Camera

Both the smartphones boasts of 8-megapixels camera which features autofocus, LED flash, geo-tagging, touch focus and face and smile detection.

But, Optimus 4X HD has a front-camera of 1.3-megapixels and the Galaxy S2 has a 2-megapixels secondary camera which is suitable for video chat.

[4] Operating System

LG Optimus 4X HD runs on the latest Android 4.0 Ice Cream Sandwich operating system.

On the other hand, Galaxy S2 runs on the Android 2.3 Gingerbread operating system. It is upgradable to Android 4.0 Ice Cream Sandwich.

[5] Connectivity

The gorgeous Optimus 4X HD is comprised of Wi-Fi 802.11 b/g/n and a Wi-Fi hotspot. Its packs the speed of HSDPA 21 Mbps and HSUPA 5.76 Mbps.

The stunning Galaxy S2 includes the Wi-Fi 802.11 a/b/g/n and Wi-Fi direct. It supports Bluetooth 3.0 technology.

[6] Storage

LG Optimus 4X HD incorporates an internal storage of 16 GB and a 1 GB RAM.

Samsung's Galaxy S2 contains 16 GB/32 GB memory and a microSD card which is extendable up to 32 GB.