Graphics Card Reviews

REVIEW / AMD Radeon HD7750 1 GB

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Régis Jehl Published on March 1, 2012
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SPECIFICATIONS

  • Chip Cape Verde
  • GPU frequency 800 MHz
  • Memory quantity 1 GB
  • Memory type GDDR5
  • Memory frequency 1125 MHz
  • Cooler Single decker
Take the Radeon HD7770, remove a few processing units, lower the clock on the graphics chip and you have the AMD Radeon HD7750. With its gigabyte of memory, this entry level model is positioned directly opposite the Nvidia GeForce GTX 550 Ti.

Size, noise and heat generation

This is an entry level card and therefore isn’t very long (under 17 cm). The cooling system that equips the model sent to the press is unlikely to be used on the versions released by AMD’s various partners and so much the better! The fan is particularly annoying. Whether in idle or in games the noise that comes from it is particularly strident.

The graphics chip however hardly heats at all and remains at around 30°C at idle and 68°C during gaming. Some partners are even likely to be offering modles without fans.

Energy consumption

At idle it’s no surprise to see that the HD7750 is in line with the rest of the Radeon HD7000 range: our machine only consumes 85 Watts in idle and drops to 75 Watts in ZeroCore Power mode, with the screen on standby. More details on ZeroCore Power technology can be found in our Radeon HD7970 test.
In gaming, we were a little disappointed as consumption reached 245 Watts. This is only slightly down on the Radeon HD7770 (256 Watts), which does nevertheless perform a good deal faster, as we’ll see below. Still, the HD7750 is a good deal better than the ‘old’ Nvidia GeForce GTX 550 Ti for which we had readings of 90 Watts in idle and 330 Watts during games under the same conditions.

Gaming performance

From 640 processing units on the Radeon HD7770 we're down to 512 units on the Radeon HD7750, which also has a lower running clock: 800 MHz, compared to 1 GHz on the 7770. The number of units given over to textures has also been reduced, going from 40 to 32. The gigabyte of memory (DDR5 on a 128-bit bus) is however identical (1125 MHz) on both models.

Tt hd 7750
General performance average
Click on the image to see all our readings
and compare this model with others


The differences in the tech specs of the cards translate to a performance difference of around 23% in games! The Radeon HD7750 is thus barely on a par with the Nvidia GeForce GTX 550 Ti and 10% down on the Radeon HD6790 (old generation).

This isn’t disastrous and this sort of performance still allows you to play the latest 3D titles, though on a full-HD screen you will have to lower the settings in games.

It has to be said that, as with the Radeon HD7770, the gain in performance in games isn't much to speak of. We do however appreciate the reduction in energy consumption.
Consult the performance index table

The test card, extra features
AMD supplied us with a reference model for our tests. The connectivity at the back comprises an HDMI 1.4 out, a DVI out and a Display Port 1.2 out. The card doesn’t require a power cable.

Eyefinity has been updated to version 2.0 and now allows you to pilot up to five screens with a single card. Bezel compensation is better handled and you can now use monitors of various sizes.

Eyefinity 2.0.0 also allows you to manage several audio outs (DDM) independently of each other (HDMI and Display Port sockets only). This means you can now watch a film on TV while playing on another screen. The film audio is then sent via the HDMI connection, while the game uses the screen speakers. The audio outs on the sound card (jack, optical) are also accessible.

Stereoscopic 3D is of course still available with HD3D technology but the level of performance on this model means that you won’t get sufficient fluidity to use it.

The ‘compute’ part, namely processing assisted by the graphics card, has also been improved. You now get accelerated 3D Blu-ray decoding and DivX playback. Like Nvidia, AMD has also got together with various applications developers so that their software benefits from hardware acceleration. Unfortunately only paid applications (except for Internet browsers) are included here, AMD not judging it worthwhile to help free applications.

PROS

  • Compact card
  • ZeroCore Power
  • Low power consumption

CONS

  • Small gain in performance on old generation
  • Fan makes high pitched noise on reference model (though the models in stores should have different cooling systems)

CONCLUSION 2/5

Power consumption is well controlled on this card and is lower than the old generation. Nevertheless performance in gaming isn’t as good as expected and it only just merits a three-star rating.
2 AMD Radeon HD7750 1 GB Digitalversus 2012-03-01 15:41:00
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