We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
Graphics cards Reviews
15,670 Reviews PC Advisor Gold Award

HIS Radeon HD 4770 review

£86 inc VAT

Manufacturer: HIS

Our Rating: We rate this 4.5 out of 5

Priced at well under £100, the ATI HD 4770 presents surprising competition to the respected 4850 graphics cards.

Priced at well under £100, the ATI HD 4770 presents surprising competition to the respected 4850 graphics cards.

Only last month we found ourselves complimenting both ATI and nVidia for finally restoring some consistency to the naming of their new products.

In theory, the lower the model number, the slower the resulting card should be. After several years of (for all practical purposes) contradictory model names, in recent times ATI and nVidia have striven to provide each fresh launch with a number that signifies its place in the performance hierarchy.

ATI, however, is now running risk of making those waters murkier once more, as its new ATI Radeon HD 4770 graphics chip actually slots in between the 4830 and the 4850. Perhaps what ATI is trying to point out, however, is that, on price alone, the ATI Radeon HD 4770 does indeed come in cheaper then either of those cards. And, given that it produces near-4850 performance, that makes this card something of a stormer.

The RV740 architecture of the ATI Radeon HD 4770 marks it out as the successor to the RV730 of the 4650 and 4670 series.

The 4830 and 4850 use the RV770 architecture, and the HD 4770's lower model name could be explained by the fact that the architecture also comes with a lower number - although to call it this a ATI Radeon HD 4770 when the next two cards up in the series are the ones using the RV770 architecture seems, to us, a little perverse!

The chip itself is, however, rather radical, in that its been produced on a 40nm manufacturing process, making it considerably more compact and efficient then the 55nm dies of the 4830 and 4850.

PC components news and reviews

The eventual success of the ATI Radeon HD 4770 won't necessarily be apparent from the specifications. That's because, in terms of raw figures, the ATI Radeon HD 4770 is good in places... but also a touch deficient. The deficiency in the ATI Radeon HD 4770 is mainly the memory interface - a quite horrible 128-bit bus, that would appear to hold it back when it tries to compete with the 256-bit interfaces of the 4830/4850.

ATI, however, has given it a significant advantage elsewhere - whereas the RV770s stick with GDDR3 memory, the ATI Radeon HD 4770 gets juicy GDDR5 modules.

These allow it to take that slightly underdone memory clock of 800MHz (the Sapphire 4830 and Gigabyte 4850, by comparison, have memory clocks of 900MHz and 960MHz) and, by quadrupling it (GDDR3 would only double the figure)), produce an effective speed of 3600MHz - almost twice that of even the respected 4850.

The core clock speed is a touch faster too, hitting 750MHz in comparison with the figures of 575MHz and 625MHz offered by the 4830 and 4850 in our graphics cards chart.

We can see further room for improvement too. This first edition of the ATI Radeon HD 4770 essentially takes the standard 4770 and attaches HIS' badge to it. But we're sure there'll be future rejigs that push those specifications further still.

The ATI Radeon HD 4770 card itself is fairly quiet in use, and requires only one 6-pin connector. CrossFireX is supported and, given the low pricing, we could see this being a first choice for many a double or triple graphics card system.

As for performance, you don't need to delve much into the figures to see that it runs the ATI Radeon HD 4850 pretty close. Far Cry 2 could hit 63 frames per second, even at the HD-plus-res of 1920x1200. Only at times of high load - essentially the top resolutions, and Crysis - does the 4850 pull out any real lead.

With Crysis Warhead, for example, we recorded 27fps at 1280x800, dropping to 15fps at 1920x1200. So even here, the 4770 holds on fairly well, despite having fewer stream processors.

NEXT PAGE: Our expert verdict >>

HIS Radeon HD 4770 review Expert Verdict »

ATI Radeon HD 4770
750MHz Core Clock
800MHz Memory Clock (3200MHz DDR effective)
400MHz Ramdac
128-bit memory interface
640 Stream Processors
PCI-E Interface
1 x 6-pin power connector
TV out
DirectX 10.1
  • Build Quality: We give this item 8 of 10 for build quality
  • Features: We give this item 8 of 10 for features
  • Value for Money: We give this item 9 of 10 for value for money
  • Overall: We give this item 9 of 10 overall

That closeness in performance to the HD 4850 makes the ATI Radeon HD 4770 an outstanding card, given that it should sell for at least £50 less then the 4850. It’s also cheaper in comparison with the 4830, despite being faster in most of our tests. This card redefines the sub-£100 arena and, as such, is a quite fantastic buy.

  • Sapphire ATI Radeon HD 4830 512MB review

    Sapphire ATI Radeon HD 4830 512MB

    The Sapphire ATI Radeon HD 4830 512MB is a very decent graphics card for a relatively modest outlay.

  • ATI Radeon HD 4770 review

    ATI Radeon HD 4770

    The ATI HD 4770 fits in snugly between the HD 4850 and the HD 4830, in terms of performance at least. We tested a native ATI card, having previously tested an HIS Radeon HD 4770. Both retail for under £100.

  • Sapphire ATI Radeon HD 4890 review

    Sapphire ATI Radeon HD 4890

    The new ATI Radeon HD 4890 doesn't totally adhere to the 'as before, but slightly faster' graphics card blueprint - but it's certainly close.

  • Sapphire Radeon HD 4670 GDDR4 review

    Sapphire Radeon HD 4670 GDDR4

    The Sapphire Radeon HD 4670 GDDR4 graphics card is engulfed by its huge fan, a proprietary Sapphire addition that maximises the cooling system while still keeping a lid on noise levels.

  • HIS HD 4850 IceQ 4 TurboX review

    HIS HD 4850 IceQ 4 TurboX

    The HIS HD 4850 IceQ 4 TurboX is HIS' take on the ATI Radeon HD 4850 Toxic Edition, with improved specifications.

IDG UK Sites

Best camera phone of 2015: iPhone 6 Plus vs LG G4 vs Galaxy S6 vs One M9 vs Nexus 6

IDG UK Sites

In defence of BlackBerrys

IDG UK Sites

Why we should reserve judgement on Apple ditching Helvetica in OS X/iOS for the Apple Watch's San...

IDG UK Sites

Retina 3.3GHz iMac 27in preview: Apple cuts £400 of price of Retina iMac with new model