Meet The 5750

Below the 5770, we have the 5750, the other card being launched today. This is a 700MHz card with 1 SIMD disabled, and the memory clock at 1.15GHz(4.6GHz effective). This represents an 18% decrease in core clock and the performance of all units tied to that clock, and a 10% further reduction in computational and texturing power due to the loss of a SIMD, for a total theoretical performance reduction of 26%. The ROP count remains unchanged at 16.

The 5750 will come with either 512MB or 1GB of RAM, depending on the target price, with no change in memory clocks. As is the case with 5770, we find the choice of memory speeds interesting since vendors still have to use the same speed RAM on the 5750 as they do the 5870 (boy this stuff must be cheap). No one makes 1.15GHz GDDR5, so vendors have no choice but to equip it with something faster. Our samples are using Hynix 1.25GHz modules, which means the 5750 and the 5770 should be capable of some easy memory overclocking (bus capabilities withstanding). At the moment no one makes 1.2GHz modules, so this may persist for some time.

Compared to the 5770, gone is the expensive Phoenix shroud, replaced with what we’re calling the “egg”. The egg is a simple circular heatsink with a 2-pin fan embedded in it, which sucks in air and pushes it out along the fins. The egg shape is brought about by the plastic cover at the top of the heatsink – we’re not sure if it’s just for looks or if it’s accomplishing some specific function. The card length is 7.15 inches, with no shroud to extend that.

Once again we’ll see the same Eyefinity port configuration here; 1 DisplayPort, 1 HDMI, and 2 DVI. There’s still a half-slot vent here, but since the design of the cooler means that the card is blowing hot air in to the case instead of out the rear, it serves more as a window to look at the card. As a card with this performance level isn’t a good choice for gaming with Eyefinity, AMD is shooting at professional users with the Eyefinity capabilities of this card. We expect that this will be a bit harder of a sale, since Single Large Surface capabilities aren’t as critical with windowed programs, and the high price of DisplayPort->DVI dongles means that the dongle is as much as the card.

We should also note that it’s the desire to keep the Eyefinity port configuration that lead to the use of the egg cooler. For the second generation of cards, vendors are likely to drop the egg cooler for a single-slot cooler. Certainly the 5750 is cool enough at 86W TDP that it doesn’t need a dual-slot cooler.

For pricing, AMD is putting the 1GB version of this card at $129, and the 512MB version at $109. This puts it in competition with NVIDIA’s GTS 250 cards, and AMD’s 4850 cards. Unlike the 5770, the price here is certainly right, as we’ll see later.

As is the case with the 5770, the 5750 is expected to have “tens of thousands” of units available at launch, with any supply constraints likely to be the same between the two. The 1GB cards will come with DIRT 2 vouchers if the vender participates, the 512MB cards will not.

Meet The 5770 The Test


View All Comments

  • squeezee - Tuesday, October 13, 2009 - link

    Remember that there is more to the card than just the ROP/TU/ALUs. If the other logic is intact it could give the dual 5770s a net larger ammount of cache, more resources for scheduling, rasterization, etc. Reply
  • Ryan Smith - Tuesday, October 13, 2009 - link

    Exactly. Geometry is also a big thing; the 5800 series and 5700 series have the same geometry abilities. Unfortunately this isn't something we can really test in a meaningful manner. Reply
  • Torres9 - Tuesday, October 13, 2009 - link

    "The 5770 is 108W at load and 18W at idle, meanwhile the 5850 is 86W at load and 16W at idle."

    do u mean the 5750 or is the 5850 that good?
  • ET - Tuesday, October 13, 2009 - link

    I'm again seeing many comments of "DX11 gives me nothing". Well, you buying it gives developers one more reason to develop for it. If you stick to DX10, then it'd take more time to move to DX11. Really. Until the majority of the market moves to a new feature set (and hopefully Windows 7 will help move out of DX9), developers will only use higher end features as "special features". Reply
  • MadMan007 - Tuesday, October 13, 2009 - link

    1 word for real DX11 rollout: consoles. Reply
  • ET - Thursday, October 15, 2009 - link

    You're right, though not the way you think. Xbox programming is more like DX11 than DX9 or DX10, and the Xbox also has a tesselation unit (though simpler than in the DX11 parts), so moving to DX11 would make developers life easier.

    What users don't get is the difference between API and hardware capabilities. Even if developers limit themselves to DX9 level capabilities, for console compatibility, using DX10 or DX11 only to develop will be much easier than using both DX9 and DX10, and result in faster and less buggy code (optimising for two very different API's is hard).
  • xipo - Tuesday, October 13, 2009 - link

    As MadMan007 says, there wont be a large adoption rate from the developers towards DX11 until the NEXT generation of consoles ships (around 2012) supporting DX11... Win7 won't matter because game developers are still going to make games for DX9-DX11... Probably the very few game that will come out being DX11 only are going to be some kind of tech demos & suck 4ss! Reply
  • ET - Tuesday, October 13, 2009 - link

    I haven't seen it stated, but I'd like to know if the 4850 benchmarked is 512MB or 1GB. If it's 512MB then the comparison with the 5750 isn't valid. Reply
  • poohbear - Tuesday, October 13, 2009 - link

    u never mentioned that the performance of the 5770 might be a driver issue? the hardware is certainly capable of outdoing the 4870 as we can see in Farcry2, so maybe its just a driver issue? Reply
  • Ryan Smith - Tuesday, October 13, 2009 - link

    I don't believe it's a driver issue. If anything it's a Far Cry 2-specific issue, but that's something I'm going to have to do some more digging for. Reply

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