When AMD released its Radeon HD 4870 and 4850 the price/performance advantage over NVIDIA at the time was so great that we wondered if it would extend to other GPUs based on the same architecture. Inevitably AMD would offer cost reduced versions of the 4800 series and today we're seeing the first example of that; meet the RV730 XT, otherwise known as the Radeon HD 4670:

The Radeon HD 4670 is priced at $79, which in the past hasn't really gotten you a very good gaming experience regardless of who made the chip. Today's launch is pretty interesting because the 4670 has the same number of stream processors as the Radeon HD 3870 (320), which at the time of its launch was reasonably competitive in the $180 - $200 range. Let's have a closer look at the 4670's specs:

  ATI Radeon HD 4870 ATI Radeon HD 4850 ATI Radeon HD 4670 ATI Radeon HD 4650 ATI Radeon HD 3870
Stream Processors 800 800 320 320 320
Texture Units 40 40 32 32 16
ROPs 16 16 8 8 16
Core Clock 750MHz 625MHz 750MHz 600MHz 775MHz+
Memory Clock 900MHz (3600MHz data rate) GDDR5 993MHz (1986MHz data rate) GDDR3

1000MHz (2000MHz data rate) GDDR3


900MHz (1800MHz data rate) DDR3

500MHz (1000MHz data rate) DDR2 1125MHz (2250MHz data rate) GDDR3
Memory Bus Width 256-bit 256-bit 128-bit 128-bit 256-bit
Frame Buffer 512MB 512MB 512MB GDDR3 or 1GB DDR3 512MB 512MB
Transistor Count 956M 956M 514M 514M 666M
Die Size 260 mm2 260 mm2 146 mm2 146 mm2 190 mm2
Manufacturing Process TSMC 55nm TSMC 55nm TSMC 55nm TSMC 55nm TSMC 55nm
MSRP Price Point $299 $199 $79 $69 $199
Current Street Price $270 $170 $80 N/A


Clock speeds are a bit lower and we've got much less memory bandwidth, but the hardware has some advantages. The RV730 XT is a derivative of the GPU in the 4800 series cards, and it carries over some of the benefits we saw inherent in the architecture changes. Of these, antialiasing saw a major benefit, but we also see changes like increases in cache sizes, texturing power, and z/stencil ability. We won't see performance on par with the 3870 in general, but the 4670 will do some damage in certain situations, especially if AA comes into play.

AMD is also announcing (but we're not testing) the Radeon HD 4650 running at a meager 600MHz and using 500MHz DDR2 memory. The 4650 will chop another $10 off the 4670's pricetag.

AMD lists board power of the 4670 and 4650 at 59W and 48W respectively and obviously they're single slot (with no PCIe power required). To make things better, both of them include the same 8-channel LPCM support for HDMI from the 4800 series. We're waiting to sort out some issues with HDCP and our latest test version of PowerDVD Ultra before confirming the support, but we know first hand that it works on the 4800 series and we see no reason that it wouldn't on the 4600 series.

We are quite happy to see AMD pushing it's latest generation technology out across its entire product line. It's great to see new parts making their way into the market rather than a bunch of old cards with slight tweaks and new names. Of course, AMD is fighting back from a disadvantage, so they don't have the luxury of relying on their previous generation hardware to trickle down the same way NVIDIA can. But we certainly hope that AMD continues to follow this sort of trend, as the past couple years have been very hard on the lower end of the spectrum with a huge lag between the introduction of a new architecture and its availability in the mainstream market.

Also of interest is the fact that AMD has added support in the RV730 for 900 MHz DDR3. The move away from GDDR3 toward the currently ramping up and dropping in price system memory solution is quite cool. Let's take a look at that in a little more depth.

Non-G DDR3? Sure, Why Not
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  • FishTankX - Wednesday, September 10, 2008 - link

    I think this is the only article i've ever seen that uses the term 'Epic fail' in the conclusion.
  • piroroadkill - Wednesday, September 10, 2008 - link

    Eh, don't be so elitist and stuffy, if the article is good - and it is - then it doesn't really matter.
  • n00bxqb - Wednesday, September 10, 2008 - link

    Same here ... I approve of this term :)

    As for the HD 4670, keep in mind that this WILL make its way into MAINSTREAM computers (i.e. Dells and HPs), which is a very good thing. The 9600 GSO and 9600 GT probably won't find a home in these PCs because, let's face it, those cards at the $100 price-point aren't high margin and Nvidia and their partners aren't going to be able to offer the kind of substantial discount to OEMs like they can on items like the HD 4670 and 9500 GT.

    Also, given the low power consumption, I could see this making its way into laptops soon as well in the $700-$1000 price range.

    This will be good not only for your uneducated mainstream computer buyer, but it will also be good for AMD, which really needs it right now, and the PC gaming industry, which also really needs increased demand right now, too.
  • fri2219 - Wednesday, September 10, 2008 - link

    Not to mention "loose" in place of the word lose...

    Terrible review, even worse writing.

    This isn't up to Anandtech standards.
  • Megaknight - Wednesday, September 10, 2008 - link

    Why is it a terrible review? Beacause it shows Nvidia sells old technology like it was new and screws the less informed people?
  • regnez - Wednesday, September 10, 2008 - link

    Well, we certainly look forward to your review of this card in the very near future, then. Or at the very least, some constructive criticism. If you cannot provide either of those, how about you just STFU?

    Also, I would not be surprised to see this card in an iMac refresh, courtesy of its low-power/decent performance. Certainly it would be an improvement over the 2400/2600 GPUs they have now, at least for the baseline models.
  • fri2219 - Thursday, September 11, 2008 - link

    Does your daddy's dick still taste like your shit?

    I look forward to your review of all the penises you've licked the shit off in the future.

    Until then, shut the fuck up/
  • xeutonmojukai - Thursday, September 11, 2008 - link

    Petty bickering makes one look petty, nothing more.

    Besides that, I have an interest in your expert assessment of your own experience licking feces off of male genitalia, since I'm sure it would be riveting compared to your new rival's most likely empty repertoire of anecdotes.

    Back on-topic, I found this review to be great, and I also find that spelling is about as relevant to the quality of a person's writing of a review as an incoherent username is to the inherent coolness of the user on a reply thread.
  • Gristy - Wednesday, December 22, 2010 - link

    I recent upgraded to the agp version of the 4670 my pc is pretty average, i have a 2.8 amd athlon 1.5 GB of ram and im currently running ARMA2 on high graphics with my resolution at 1024 x 768 and the game runs perfectly smooth with absolute fantastic graphics, i HIGHLY reccomend this budget card :D
  • dellprecision380 - Saturday, July 9, 2011 - link

    4670 will work in x16 pci slot and 375watt psu?mother board intel 955xcs and pentium d 3.2ghz

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