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  • AMD Radeon HD 6450

    Phoronix: AMD Radeon HD 6450

    While we have reviewed several graphics cards from AMD's Radeon HD 6000 series, one of the GPUs in this latest family that we have not benchmarked previously is the Radeon HD 6450. The AMD Radeon HD 6450 is the lowest-end offering in this family, but how's its performance relative to other low-end AMD and NVIDIA parts? In this review we have a PowerColor Radeon HD 6450 1GB and are seeing how well this graphics card works under Ubuntu Linux.

    http://www.phoronix.com/vr.php?view=16396

  • #2
    This Radeon HD 6450 review also happens to one of the first articles using the new OpenBenchmarking.org embedded graphs, so feedback is welcome if you experience any difficulties viewing the results.
    The result graphs displayed fine, but there is an issue with the first table on page 3. Same thing happened on both Firefox and Chrome.

    The width of the image is much wider than the width the article allows, and it gets cut off to the right.

    Last edited by smitty3268; 09-09-2011, 06:37 AM.

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    • #3
      The same happens on Opera & the png version of the same table.

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      • #4
        It's Caicos, and not Calcos.

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        • #5
          "Hopefully the AMD Radeon HD 7450 will be a more compelling product..."

          this is the last lowend card ... because amd wana play lowend stuff with the "fusion"-APU line.

          the 7xxx lowend card get at minimum gddr5 and the 8000 lowend cards get XDR2 vram...

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          • #6
            Originally posted by Qaridarium View Post
            "Hopefully the AMD Radeon HD 7450 will be a more compelling product..."

            this is the last lowend card ... because amd wana play lowend stuff with the "fusion"-APU line.

            the 7xxx lowend card get at minimum gddr5 and the 8000 lowend cards get XDR2 vram...
            Yeah, as much as I hate to agree with Q here, I can definitely see this as being a problem. Product placement wise, why the hell would a company put out a chip that is slower than the CPU integrated ones? It makes absolutely no damn sense. It would be kinda interesting to see if switching to a faster memory would result in better results, although, I believe they already produce the 6450 in a GDDR5 version. Where the memory is concerned, it would probably give it the most performance to finally ditch the 64-bit bus on their lowest end GPU and move them all to at least 128-bit.

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            • #7
              Originally posted by LinuxID10T View Post
              Product placement wise, why the hell would a company put out a chip that is slower than the CPU integrated ones? It makes absolutely no damn sense.
              The HD6450 DDR3 is slower than the GPU in a fully-configred Llano but remember that Llano has the *fastest* integrated GPU out there not the slowest. If you compare it with other integrated GPUs (Ontario + competitors products) then it makes a lot more sense.

              Originally posted by LinuxID10T View Post
              It would be kinda interesting to see if switching to a faster memory would result in better results, although, I believe they already produce the 6450 in a GDDR5 version. Where the memory is concerned, it would probably give it the most performance to finally ditch the 64-bit bus on their lowest end GPU and move them all to at least 128-bit.
              Yes, memory makes a big difference. The performance delta between DDR3 and GDDR5 varies wildly with application but GDDR5 is often 20-40% faster for the same memory size and memory bus. Benchmarks will often show a higher delta but note that the GDDR5 cards are sometimes clocked higher as well.

              IIRC a GDDR5 card with 64-bit memory bus is still cheaper to build than a DDR3 card with 128-bit memory bus.

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              • #8
                I think it's pretty clear this card is aimed at HTPC's and it's a great product for Windows users. When the gallium3D VDPAU stack matures (and I have faith that it will with AMD's dedicated devs), this could be a perfect card for HTPC and/or general desktop use on Linux. It should be cheaper then too

                The sample that Michael got for review does have DDR3, but I'm sure that GDDR5 variants will be available for a modest price increase.

                Please support AMD and their open-source strategy when possible.

                EDIT: Oh, and there's a sentence that needs some editing on page2:
                There is a two-fin pan header on the PCB if you are interested in upgrading the GPU heatsink to something that is passively cooled,
                Last edited by DanL; 09-09-2011, 01:25 PM.

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                • #9
                  Originally posted by bridgman View Post
                  The HD6450 DDR3 is slower than the GPU in a fully-configred Llano but remember that Llano has the *fastest* integrated GPU out there not the slowest. If you compare it with other integrated GPUs (Ontario + competitors products) then it makes a lot more sense.



                  Yes, memory makes a big difference. The performance delta between DDR3 and GDDR5 varies wildly with application but GDDR5 is often 20-40% faster for the same memory size and memory bus. Benchmarks will often show a higher delta but note that the GDDR5 cards are sometimes clocked higher as well.

                  IIRC a GDDR5 card with 64-bit memory bus is still cheaper to build than a DDR3 card with 128-bit memory bus.
                  See, the thing is I would never compare it to Ontario's graphics because it is a desktop card while Ontario is integrated for netbooks. It is just with Llano being the desktop processor, I would compare it to a desktop card, such as the HD 6450. That being said, if the audience for the HD 6450 is just people wanting to upgrade an existing PC I could see that. I just can't see where AMD is trying to place it on its new desktop lineup.

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                  • #10
                    Remember that discrete GPUs are used with CPUs from other vendors as well, not just from AMD, so it helps to look at the product placement relative to all the desktop systems out there rather than just the latest AMD products.

                    That said, I usually buy the midrange part (my last board purchase was an HD 5670) so I'm probably not the best person to be arguing the merits of the entry level discrete GPU

                    Also note that most of the Llano design wins were for notebook rather than desktop, although it does make a pretty slick desktop system. I don't think anyone is suggesting that an HD6450 is the right match for a Llano anyways.
                    Last edited by bridgman; 09-09-2011, 02:27 PM.

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                    • #11
                      Originally posted by LinuxID10T View Post
                      Yeah, as much as I hate to agree with Q here, I can definitely see this as being a problem. Product placement wise, why the hell would a company put out a chip that is slower than the CPU integrated ones? It makes absolutely no damn sense. It would be kinda interesting to see if switching to a faster memory would result in better results, although, I believe they already produce the 6450 in a GDDR5 version. Where the memory is concerned, it would probably give it the most performance to finally ditch the 64-bit bus on their lowest end GPU and move them all to at least 128-bit.
                      Simple, There are plenty of people out there buying massively CPU heavy boxes without an IGP, think someone getting an X6 T1100 and an 870 series mobo. This card is essentially a slightly updated version of the HD4290 found on the 890GX IGP, it's about the same money, but has it's own dedicated VRam so nothing is wasted to the IGP.

                      Yes it doesn't hold a candle to the A series APUs, those are the new low end whil this is the last chip of the old era. It's a good thing as well since the OEMs seem to love making very CPU heavy boxes with cards like this while still using an IGP based mobo and calling it a gaming PC... This new strategy should work well for AMD if they can force OEMs to tot use the Nvidia equivalent of these cards on AMD hardware as this will give PC gaming a much needed sot in the arm by having many more gaming capable machines on the market.

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                      • #12
                        Originally posted by bridgman View Post
                        Remember that discrete GPUs are used with CPUs from other vendors as well, not just from AMD, so it helps to look at the product placement relative to all the desktop systems out there rather than just the latest AMD products.

                        That said, I usually buy the midrange part (my last board purchase was an HD 5670) so I'm probably not the best person to be arguing the merits of the entry level discrete GPU

                        Also note that most of the Llano design wins were for notebook rather than desktop, although it does make a pretty slick desktop system. I don't think anyone is suggesting that an HD6450 is the right match for a Llano anyways.
                        Last entry level discrete GPU I bought was a Radeon HD4350. It was my first new GPU in quite some time and I was just amazed at how much faster it was than both the integrated graphics and the Radeon X300. I also decided to buy it because I didn't want to be stuck with the open source drivers for the X300, which now has EXCELLENT open source support -____- Anyway, for $29 it was totally worth it. I can definitely see where retrograding a previous PC with a low end card would definitely make a difference.

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                        • #13
                          Originally posted by bridgman View Post
                          IIRC a GDDR5 card with 64-bit memory bus is still cheaper to build than a DDR3 card with 128-bit memory bus.
                          Too bad most will pair this chip with 64-it GDDR2... Below the HD*670 series the variance of vram bus and tech seem to be chosen at completely at random, I still have my old Nvidia 8500GT 128-bit GDDR3 since it outperformed almost all the more expensive 8600GT cards due to them having 64-bit and/or GDDR2 vram even though the 8600 had more shaders to work with, the "faster" 8600GT only pulled ahead when it too was using 128-bit GDDR3. In that case the 8600GTS was the floor for which all cards HAD TO HAVE 128-bit GDDR3.

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                          • #14
                            Yeah, the problem is that some fairly large percentage of buyers, maybe 99.9999999% or so (plus or minus a couple of '9's), still seem to make buying decisions based on the amount of VRAM rather than the performance characteristics of the memory. As with so many things in life, broken reward systems lead to seemingly undesireable or irrational behaviour. If buyers reward vendors for making cards with lots of slow memory it's not hard to predict what kind of cards you are going to see next time.

                            On the other hand, having too little memory can result in a fairly sharp performance drop at very high resolutions and this issue seems to be fairly well understood, so one could make a case that spending on amount of memory future-proofs you in a way that buying faster memory can not. By that logic a low end DX11 card with 1GB of DDR3 isn't that bad an idea, although it's not the tradeoff I would make.
                            Last edited by bridgman; 09-10-2011, 02:20 PM.

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                            • #15
                              Originally posted by LinuxID10T View Post
                              See, the thing is I would never compare it to Ontario's graphics because it is a desktop card while Ontario is integrated for netbooks. It is just with Llano being the desktop processor, I would compare it to a desktop card, such as the HD 6450. That being said, if the audience for the HD 6450 is just people wanting to upgrade an existing PC I could see that. I just can't see where AMD is trying to place it on its new desktop lineup.
                              There are actually quite allot of Nettops(ITX based systems small enough to be bolted right on the back of the monitor) http://www.newegg.com/Product/Produc...82E16883220072 and desktop mobos based around the E-350, which have a PCIe 16x slot. http://www.newegg.com/Product/Produc...=1&srchInDesc=

                              Originally posted by DanL View Post
                              I think it's pretty clear this card is aimed at HTPC's and it's a great product for Windows users. When the gallium3D VDPAU stack matures (and I have faith that it will with AMD's dedicated devs), this could be a perfect card for HTPC and/or general desktop use on Linux. It should be cheaper then too
                              Meh, it sucks even for an HTPC, better to go with the A series chips so you can at least play most of the HIB games, this chip would fall short of that in several of the titles, Penubra, FrozenByte games etc.

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