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Updated: AMD 785G: The Venerable 780G, Evolved

785G Northbridge And SB710 Southbridge Vital Statistics

Let's have an overall look at the 785G and its brethren to see how their vital statistics stack up:

AMD 785G AMD 780G AMD 790GX
Processor Interface HT 3.0/5,200 MT/sHT 3.0/5,200 MT/sHT 3.0/5,200 MT/s
PCI Express Support 2.0/26 lanes/1 x 16 Graphics2.0/26 lanes/1 x 16 Graphics2.0/26 lanes/2 x 8 Graphics
Integrated Core RV620RV610RV610
DirectX/OpenGL 10.1/2.110.0/2.110.0/2.0
Shaders/TU/ROP40/4/440/4/440/4/4
Graphics Clock 500 MHz500 MHz700 MHz
Display Outputs DisplayPort, HDMI 1.3, DVI, VGADisplayPort, HDMI 1.2, DVI, VGADisplayPort, HDMI 1.2, DVI, VGA
Multi-GPU Hybrid CrossFireXHybrid CrossFireXHybrid CrossFireX, CrossFireX
Addtl. PCIe Six x1 PCIe 2.0Six x1 PCIe 2.0Six x1 PCIe 2.0
Southbridge SB710SB700/SB710SB750
Interconnect A-Link Xpress (4 x PCIe 1.1)A-Link Xpress (4 x PCIe 1.1)A-Link Xpress (4 x PCIe 1.1)
RAID Support RAID 0, 1, 10RAID 0, 1, 10RAID 0, 1, 10, 5
Audio HD AudioHD AudioHD Audio
USB 12 USB 2.0 + 2 USB 1.112 USB 2.0 + 2 USB 1.112 USB 2.0 + 2 USB 1.1
Ethernet N/AN/AN/A

There aren't any super-significant differences between 780G and 785G as far as raw specifications are concerned, save DirectX 10.1 support for the new 785G. Keep in mind that the 785G does have some features that the 780G and 790GX do not have, which we'll go over in the next few pages.

The higher-end 790GX differentiates itself from its brothers with a higher 700 MHz graphics clock, the ability to use dual discrete graphics cards in CrossFireX, and the additional RAID 5 mode. All of these boons are missing from the new 785G, indicating that the 785G is not positioned as the next big thing, but as an improved replacement for the 780G chipset. Pricing will likely fall to current 780G levels over time, and while AMD admits that its customers will still be able to purchase the 780G chipset should they choose to do so, 785G will slowly replace 780G. Perhaps we'll see a 795GX chipset arrive in the not-too-distant future, bringing the 785G advancements to the higher-end 790GX price segment.

The SB710 Southbridge

The SB710 is nothing new. It has already been used in conjunction with the 780G as a replacement for the older SB700 chipset component. The SB710 is something of a hybrid between the older SB700 and the SB750 commonly used on 790GX-based boards. And, like the SB750, SB710 sports Advanced Clock Calibration (AAC), used to enable additional headroom in Phenom processors (but no longer needed with Phenom II).

Like the SB700, however, AMD's SB710 does not support RAID 5, although it does support RAID 0, 1, and 10 arrays.

  • macer1
    the real question is how would this perform if mated to an Atom processor in an nettop.
    Reply
  • mcnuggetofdeath
    "refined architecture" ? To my knowledge, and please correct me if im wrong, all that was changed between the original phenom and the phenom 2 was the addition of more L3 cache allowing it to do more simultaneously and a die shrink allowing for higher clocks. That does not a refined architecture make. When AMD added an on die memory controller to their processors years ago they had made a huge advancement in architecture. Im sad to see them fall away from the performance crown. Here's hoping their new Bull Dozer architecture brings something genuinely intriguing to the table.
    Reply
  • mcnuggetofdeath
    ^^^ and support for DDR3. Although thats a change to the board, not the CPU.
    Reply
  • anamaniac
    Very interesting.
    A integrated GPU that can game. =D

    Makes my lil Pentium D with a 4670 seem puny...
    3.3GB/s memory bandwidth (single channel DDR2 533... though 2 sticks, it runs in single channel... damn prebuilts) also seems sad on my rig...

    macer1the real question is how would this perform if mated to an Atom processor in an nettop.
    Good question. A dual core Atom with a 4200 integrated would be nice.
    We all know Intel makes shitty mothebroards and AMD makes kickass motherboards anyways.
    Reply
  • SpadeM
    mcnuggetofdeath^^^ and support for DDR3. Although thats a change to the board, not the CPU.
    Not correct, the P2 has a built in memory controller so the switch to ddr3 affected that controller
    Reply
  • apache_lives
    anamaniacVery interesting.A integrated GPU that can game. =DMakes my lil Pentium D with a 4670 seem puny...3.3GB/s memory bandwidth (single channel DDR2 533... though 2 sticks, it runs in single channel... damn prebuilts) also seems sad on my rig...Good question. A dual core Atom with a 4200 integrated would be nice.We all know Intel makes shitty mothebroards and AMD makes kickass motherboards anyways.

    Native ram for a pentium d is PC4200 which has a max of 4.2gb/s per channel etc and the FSB has the max of 6.4gb/s

    The Intel atom would most likely underpower any video card out there, and Intel does actually make a good reliable business platform where video performance is not required etc
    Reply
  • I'm sorry, is this an Intel benchmark site? All other reviews put SYSTEM power consumption for Athlon II 250 well below Intel E7200.
    Reply
  • aproldcuk
    This article raised a lot of questions for me. What about Hybrid Crossfire for example? What kind of cards can be used together with this new IGP? Is the discrete graphics card on standby if no performance is required? If no then how much extra outlet wattage is expected? And how much extra if actively in use? I'm interested in using the 785G solution in the 24/7 HTPC setup with the possibility to do occasional gaming as well. My current setup with 690G chipset and Athlon 64 X2 BE-2350 CPU draws around 50 watts most of the time and up to 90 watts under heavy load. Is it too much to expect similar levels from 785G and Phenom II X3 705e combo for example?
    Reply
  • wh3resmycar
    when can we see the mobile version of this? this is most certainly a welcome update compared to the 780g-hd3200 chipset. and beats any nvidia igp hands down. id love to see this on an $700-$800 laptop. good thing im still holding back on buying a new notebook.
    Reply
  • Pei-chen
    Good timimg, I was wondering if 785G is better than 790GX or not yesterday. Thanks.
    Reply