iXBT Labs - Computer Hardware in Detail






NVIDIA nForce 790i and Intel X48 Chipsets

<< Previous page

     Next page >>

Intel X48 Express

OK, we had almost nothing to say about two new chipsets from NVIDIA. And the top product from Intel launched in spring 2008 has even fewer characteristics worth mentioning here. Functionality of the X48 can be described with a single phrase: it's Intel X38 minus DDR2 support plus official support for 1600 MHz FSB. Let's enumerate the key features of the X48:

Intel X48 Specs
  • Support for all Celeron, Pentium, and Core 2 (Duo/Quad/Extreme) processors with 800-1600 MHz FSB, including models on Wolfdale/Yorkfield (Penryn) cores
  • Dual-channel DDR3-800/1066/1333 memory controller, up to 4 DIMM modules with the total size of up to 8 GB (without ECC), Fast Memory Access and Flex Memory technologies, as well as XMP support, including memory operating at higher frequencies
  • 2 x PCI Express 2.0 x16 slots
  • DMI bus (~2 GB/s bandwidth) to the ICH9 Southbridge
  • Up to six PCIEx1 ports
  • Up to four PCI slots
  • 4/6 (4 in ICH9, 6 in ICH9R) Serial ATA II ports for 4/6 SATA300 devices (SATA-II, the second generation of the standard), AHCI and NCQ (only for ICH9R), hot plug, eSATA, and port splitters
  • RAID (ICH9R only) 0, 1, 0+1 (10) and 5 with Matrix RAID function (the same array of drives can be used in several RAID modes - for example, two drives may form RAID 0 and RAID 1, each array will use its own part of the disks)
  • 12 x USB 2.0 devices supporting hot plug
  • Gigabit Ethernet MAC controller and a special interface (LCI/GLCI) for a PHY controller (i82566 for Gigabit Ethernet, i82562 for Fast Ethernet)
  • Intel Turbo Memory support
  • High Definition Audio (7.1)
  • Binding for low-speed and outdated periphery, other things
Intel X48 Northbridge

We've said everything about support for new processors above. We can add a few words about memory. You might have already read about XMP profiles, stored in the unused SPD area, which allow to specify an overclocked mode easily, taking into account such nuances as increased voltage. XMP profiles do not depend on a chipset, of course (we've seen DDR3 with XMP work on the Intel X38-based motherboard). But Intel stresses that the X48 is the first chipset certified for this technology. It's important, because it allows to announce official support for DDR3-1600 (and even faster modes), as in case of nForce 790i. But memory modules must have extended SPD - with XMP or EPP 2.0 for Intel and NVIDIA chipsets correspondingly. I repeat that X48 uses the old ICH9 as its Southbridge.

What concerns heat dissipation, the X48 (and X38) are not doing as good as usual Intel 3x chipsets: the hot PCI Express 2.0 controller makes its big contribution here. The difference is noticeable in numbers (X48 TDP - 30.5 W, X38 - 26.5 W, P35 - 14.5 W, G33 - 16 W) and necessary cooling systems. At the same time, heat release of the nForce 790i chipsets is still noticeably higher, although we have to rely on our tests alone here.

Write a comment below. No registration needed!

<< Previous page

Next page >>

Article navigation:

Page 1: NVIDIA nForce 790i SLI and Ultra SLI

Page 2: Intel X48 Express

Page 3: Performance tests

blog comments powered by Disqus

  Most Popular Reviews More    RSS  

AMD Phenom II X4 955, Phenom II X4 960T, Phenom II X6 1075T, and Intel Pentium G2120, Core i3-3220, Core i5-3330 Processors

Comparing old, cheap solutions from AMD with new, budget offerings from Intel.
February 1, 2013 · Processor Roundups

Inno3D GeForce GTX 670 iChill, Inno3D GeForce GTX 660 Ti Graphics Cards

A couple of mid-range adapters with original cooling systems.
January 30, 2013 · Video cards: NVIDIA GPUs

Creative Sound Blaster X-Fi Surround 5.1

An external X-Fi solution in tests.
September 9, 2008 · Sound Cards

AMD FX-8350 Processor

The first worthwhile Piledriver CPU.
September 11, 2012 · Processors: AMD

Consumed Power, Energy Consumption: Ivy Bridge vs. Sandy Bridge

Trying out the new method.
September 18, 2012 · Processors: Intel
  Latest Reviews More    RSS  

i3DSpeed, September 2013

Retested all graphics cards with the new drivers.
Oct 18, 2013 · 3Digests

i3DSpeed, August 2013

Added new benchmarks: BioShock Infinite and Metro: Last Light.
Sep 06, 2013 · 3Digests

i3DSpeed, July 2013

Added the test results of NVIDIA GeForce GTX 760 and AMD Radeon HD 7730.
Aug 05, 2013 · 3Digests

Gainward GeForce GTX 650 Ti BOOST 2GB Golden Sample Graphics Card

An excellent hybrid of GeForce GTX 650 Ti and GeForce GTX 660.
Jun 24, 2013 · Video cards: NVIDIA GPUs

i3DSpeed, May 2013

Added the test results of NVIDIA GeForce GTX 770/780.
Jun 03, 2013 · 3Digests
  Latest News More    RSS  

Platform  ·  Video  ·  Multimedia  ·  Mobile  ·  Other  ||  About us & Privacy policy  ·  Twitter  ·  Facebook

Copyright © Byrds Research & Publishing, Ltd., 1997–2011. All rights reserved.