Diamond Multimedia R9 270X Review - Specifications and Card

Share

Specifications (From DMM):

 

·         Diamond AMD R9 270X PCIE GDDR5 2GB Memory Graphics Video Card
Bus Type: PCI Express 3.0 x16 | Part Number: R9270XD52GXOCV2

·         Memory:  2GB GDDR5

·         Memory Interface:  256-bit

·         Bus Interface:  PCI Express 3.0 x16

·         Core Clock:  1030 MHz

·         Memory Clock:  1400 MHz x 4 (5600 MHz)

·         Video Outputs: DVI-I, DVI-D, HDMI and Standard Display Port

·         Maximum Simultaneous supported Displays:  3

·         Board size: Full Height Dual Slot 8.7 (L) x 5.1 (H) x 1.6 (W) Inches

·         Box Dimensions :  11.5 x 9.5 x 2.87 Inches

·         Product weight: 1.10 lbs

·         Product weight with content: 4.0 lbs

·         Direct X Support: 11.2

·         Open GL support: 4.3

·         AMD Eyefinity: Yes

·         AMD App Acceleration: Yes

·         AMD HD3D Technology: Yes

·         AMD Cross Fire: Yes

·         DisplayPort 1.2 HBR: Yes

·         HDMI ® :  Yes

·         Max resolution 4096 x 2160 per display Quad HD/4K video support

·         Dual Link DVI: Yes HDCP Support

·         Single Link DVI: Yes, Max resolution 2560 x 1600

·         VGA: Yes, With DVI to VGA adapterMax resolution 2048 x 1536

·         Integrated Audio Controller: Yes

·         AMD Power Play: Yes

·         AMD Power Tune: Yes

·         AMD Zerocore Power: Yes

What is interesting to note is that the standard clock is actually not 1030mhz on the Core, but rather 1050MHz which is the standard clock speed for the 270X.

 

The card:

Diamond Multimedia R9 270X Review

The other than the card, the box is the most eventful part of the package. The only accessory other than manuals and a disc is a CrossFireXTM bridge. 

Diamond Multimedia R9 270X Review

The card design is polished and looks finished. It has a little bit of weight to it, which is a good sign of durability and a good cooling system. Two fans (which run very quiet on Auto) blow on a custom heatsink to keep things frosty. 

Diamond Multimedia R9 270X Review

The backside of the card reveals the blue color of the PCB. The heatsink is held on by 4 screws, and is easy to remove and clean if needed. The heatpipes protrude a bit, but that is good thing as this heatsink is an overclocking feature of this card because there is no voltage control for 99% of 270X cards. 

Diamond Multimedia R9 270X Review

The video outputs consist of HDMI, 2*DisplayPort, and DVI. I used HDMI in my testing. 

Diamond Multimedia R9 270X Review

The backside of the card reveals the radiator design of the heatsink which would otherwise be covered by the black aluminum shroud. 

Diamond Multimedia R9 270X Review

This angle reveals the heatpipe distribution. 

 

Diamond Multimedia R9 270X Review

 

From this angle we can count 5 heatpipes. The fans are exactly at the same height as the top of the backpanel of the card.Diamond Multimedia R9 270X Review

Removing the heatsink reveals very good contact between the GPU core and the copper of the heatsink. 

Diamond Multimedia R9 270X Review

Removing the heatsink reveals very good contact between the GPU core and the copper of the heatsink. 

Diamond Multimedia R9 270X Review

This is the bare PCB of the GPU. Almost all the major components are on this side of the GPU, since everything is now integrated into the GPU except power supplies, memory, and BIOS we will take a look at those elements. What is interesting is the layout of this card is not the AMD reference design, which isn’t a typical thing for Diamond to do; perhaps it was done to facilitate the cooler. Either way the performance gains from the cooler should benefit anyone looking to overclock the card more than the PCB layout.

Diamond Multimedia R9 270X Review

This is the AMD R9 270X GPU Core which is based off the Pitcairn uArch, which is the same core used on cards such as the HD7870, however the 280X and the 7970 use the Tahiti uArch. What is interesting to note is that the 270X must be a higher yield, since the R9 series run faster by default than the previous HD7XXX series. Although the R9 270X is meant to replace the 77XX series in price, it is only slightly slower than the 79XX series, faster than the 78XX series, and wipes the floor with the 77XX series as we will see later in this article. 

Diamond Multimedia R9 270X Review

The reference AMD R9 270X sent to reviewers uses Hynix GDDR5, however almost all the R9 270X on the market from vendors contain Elpida GDDR5. These Elpida modules are rated for 1500MHz, but only run 1400MHz by default, which makes for easy overclocking. 

Diamond Multimedia R9 270X Review

This is interesting, the switching node (where the power comes out of the inductors), is towards the center of the card instead of towards the GPU. This doesn’t affect performance at all since the distance between the core and the switching node is practically the same, however it is an interesting configuration I have only seen on the HIS R9 270X.  The reason for this might be to accommodate the larger cooler on this card. This 5 phase VRM is all of the GPU Core, it is operated by a CHiL Semi(International Rectifier) CHL8225G which is I2C compliant and a fully digital PWM. The PWM powers 5 DrMOS from Fairchild Semiconductor, model FDMF6705B, which are rated at 40A. These are the same parts as the AMD reference model. This is a powerful VRM capable of 200A loads. Considering you can’t change the voltage on 99% of R9 270X, all you are looking for is high current capability in the VRM as the voltages will not go out of range. If you are into modding you can fill up those empty capacitor pads with capacitors, however I don’t it will benefit you much as this VRM is already tuned for max efficiency and performance. 

Diamond Multimedia R9 270X Review

This picture shows off two other switching power supplies for the memory and the pll of the card. The only reason they went with switching regulators instead of linear ones is because the memory and pll voltages must be on turbo as well. This means that the card should use very little power at idle. Two 6-pin VGA power plugs are present as well, they should provide more than enough power since the user cannot increase the voltage.

Additional information