HD7900 series heatinks


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Price: $39.80

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Model:

Designed in the USA
ROHS Compliant
Introduction

The HD7900 series heatsink are designed to cool surface mount components (memory, and mosfets) on AMD® Radeon™ HD 7970 and HD 7950 reference board design graphics cards which Brand Models are listed hereafter.  Due to the differences in PCB design between the HD 7970 and 7950, two specific models are available:  the HD7970-HS and HD7950-HS
 
The Heatsinks are designed to be installed in conjunction with our MCW82-7900 VGA waterblocks and to allow stable overclocks while keeping the cards cool and silent.

The performance advantage of  hybrid cooling which consists in cooling the processor with a GPU waterblock in combination with a heatsink, as opposed to using a full-cover water-block solution, is well known among enthusiast users: improved thermal dissipation at the GPU level thanks to Swiftech's Diamond Pin Matrix, a more reliable TIM joint, and less heat dumped into the liquid cooling loop coming from memory and power MOSFETS, since they remain air cooled. In addition, this combination provides a complete solution that is more economical than full-cover waterblocks because the GPU waterblock can be re-used over time with different VGA cards.
 
The heatsinks are a precision CNC machined Aluminum extrusions, and they are designed to allow optimum TIM joints with the hottest components. Thermal pads are pre-applied onto the pedestals corresponding to each component to be cooled. Lastly, the heatsink feature mounting holes to install an optional 60mm fan to provide additional cooling for users who perform extreme voltage modifications.
 
Recommended Use
  • Adequate ventilation for no or moderate overclok applications: a gentle draft of air blowing in the general direction of the heatsink is recommended for best results.
  • Preferred ventilation for high overclock applications: use of an optional 80x15mm quiet fan (1500 rpm range) is recommended; see thermal test data below for comparative performance with the reference cooling soltuion.

Thermal Test Data

All tests were conducted at 23°C +/- 0.5°C ambient - GPU cooled by MCW82-7900 - Liquid Cooling system:  MCR320-Drive with 1800 rpm fans.
 
A first series of tests using the Unigine Heaven benchmark is representative of conditions found in a typical gaming scenario. Two operating conditions were tested: at stock frequency & voltage, and at maximum stable overclock & stock voltage.
 

Unigine Heaven @ stock speed & voltage

GPU frequency
Mhz
GPU Temp
°C
VR1 Temp
°C
VR2 Temp
°C
Fan speed
rpm
Subjective noise level

Link to test

Reference cooler

925

78

64

56

2417

Low

MCW82-7900 + 7970-HS no fan

925

37

60

57

n/a

None

MCW82-7900 + 7970-HS with fan

925

37

51

48

1500

Whisper

 

 

 

 

 

 

 

Unigine Heaven @ Max OC & stock voltage

GPU frequency
Mhz
GPU Temp
°C
VR1 Temp
°C
VR2 Temp
°C
Fan speed
rpm

Subjective noise level

Link to test

Reference cooler

1150

81

71

60

2565

Low

MCW82-7900 + 7970-HS with fan

1190

38

54

50

1500

Whisper

 
A second series of tests using the Furmark benchmark is representative of artificially high loads not usually encountered in typical gaming (real life) situations. The tests are nonetheless presented as worse case scenarios. Two operating conditions were tested: at stock frequency & voltage, and at maximum stable overclock & stock voltage.
 
Furmark @ stock speed & voltage
GPU frequency
Mhz
GPU Temp
°C
VR1 Temp
°C
VR2 Temp
°C
Fan speed
rpm

Subjective noise level

Link to test

Reference cooler

925

86

88

67

3051

Noticeable

MCW82-7900 + 7970-HS no fan

925

45

98

87

n/a

None

MCW82-7900 + 7970-HS with fan

925

44

77

66

1500

Whisper

Furmark @ Max OC & stock voltage
GPU frequency
Mhz
GPU Temp
°C
VR1 Temp
°C
VR2 Temp
°C
Fan speed
rpm

Subjective noise level

Link to test

Reference cooler

1150

90

100

72

3382

High

MCW82-7900 + 7970-HS with fan

1190

46

92

75

1500

Whisper

 
 
Specifications
  • Material: black anodized aluminum extrusion
  • Dimensions (Inch): 9.5" (L) x 3.7" (W) x .73" (H)
  • Dimensions (Metric): 242 (L) x 94mm (W) x 18.5 mm (H)
  • Weight: 12 oz (338 g)
  • Installation: high thermal conductivity 0.5mm pads for memory and power mosfets
  • Pre-existing mount holes for optional 80x15mm fan
Brand Models Compatibility List (subject to frequent updates)
 
 
Critical information:
 
The PCB revision numbers noted below represent the deciding factor to go by when selecting your Swiftech product,
rather than the brand and/or model number of the card.

Please carefully inspect your card to locate the PCB revision number. All brands using AMD reference PCB's normally
print this number on the card. It is usually located immediately above the gold PCI contacts (GPU side of the board).
 
Here is an example showing a PCB number 109-C20547 (the -00P at the end can be ignored)
Caution: 1 digit may make the difference between supported or not supported!
 
 
 
 

COMPATIBILITY CHART BY MODEL & BRAND

HD7970-HSF

HD7950-HSF

Model (AMD reference 109-C38637)

Compatible
Y/N

Model (AMD reference 109-C38137)

Compatible Y/N

ASUS
HD7970-3GD5-3DI2S Radeon HD 7970 3GB 
HD7970-DC2-3GD5 Radeon HD 7970 3GB

Y
N
ASUS
HD7950-DC2-3GD5 Radeon HD 7950 3GB
HD7950-DC2T-3GD5 Radeon HD 7950 3GB

Y
Y
CLUB-3D
HD7970, Radeon HD7970, 3.0GB GDDR5 (CGAX-7977)

Y
CLUB-3D
CGAX-7957 Radeon HD 7950 3GB GDDR5
CGAX-7977O Radeon HD 7970 royalKing 3GB 

Y
Y
DIAMOND
AMD Radeon HD 7970 PCIE 3G GDDR5 7970PE53G

7970PE53GDD Double Black Diamond Edition 

Y
Y
GIGABYTE
GV-R797D5-3GD-B 
GV-R797OC-3GD Radeon HD 7970 3GB
GV-R797OC-3GD 7970 3GB (Rev 2.1)
GV-R797TO-3GD Radeon HD 7970
GV-R797SO-3GD Radeon HD 7970

Y

Y
N
N

N
GIGABYTE
GV-R795WF3-3GD Radeon HD 7950 3GB

Y
HIS
H797F3G2M Radeon HD 7970 3GB

H797QM3G2M HD 7970 IceQ X2 Turbo 3GB
H797QMC3G2M HD 7970 IceQ X2 Turbo 3GB
H797QMT3G2M HD 7970 IceQ X2 Turbo 3GB
X H797QMG3G Radeon HD 7970

Y

Y
Y
N
N
HIS
H795F3G2M Radeon HD 7950 3GB

IceQ Boost Clock H795QC3G2M Radeon HD 7950

Y
Y

MSI
R7970-2PMD3GD5 Radeon HD 7970 3GB
R7970-2PMD3GD5/OC Radeon HD 7970 3GB
R7970 Lightning Radeon HD 7970


Y

Y
N
MSI
R7950 Twin Frozr 3GD5/OC Radeon HD 7950 

R7950-2PMD3GD5/OC Radeon HD 7950 3GB

Y

Y

PowerColor
AX7970 3GBD5-2DHV2 Radeon HD 7970 3GB
AX7970 3GBD5-2DHV3 Radeon HD 7970 3GB
AX7970 3GBD5-2DHV3 Radeon HD 7970 3GB
AX7970 3GBD5-M2DHGRadeon HD 7970 3GB

AX7970 3GBD5-2DHPPV Radeon HD 7970 VORTEXII


Y
N
N
Y
N
PowerColor
AX7950 3GBD5-2DH Radeon HD 7950 3GB
AX7950 3GBD5-2DHPP Radeon HD 7950 3GB
AX7950 3GBD5-2DHV4 HD 7950 Boost State 3G

Y
Y
Y
SAPPHIRE
11197-01-40G Radeon HD 7970 3GB
21197-00-40G Radeon HD 7970 3GB
11197-06-40G Radeon HD 7970 3GB
Vapor-X 100351VXSR Radeon HD 7970
Vapor-X 100351-6GVXSR Radeon HD 7970

Y

Y
Y
N
N
SAPPHIRE
HD 7950 3GB GDDR5 (11196-00-40G)
HD 7950 OC 3GB GDDR5 (11196-02-40G)
100352OCSR Radeon HD 7950 3GB
100352SR Radeon HD 7950 3GB
100352-2L Radeon HD 7950 3GB
FleX 100352FLEX Radeon HD 7950 3GB
Vapor-X 100352VXSR Radeon HD 7950 3GB

Y
Y
Y
Y
Y
N
N
VisionTek
900491 Radeon HD 7970 3GB
900557 Radeon HD 7970 GH

Y
Y
VisionTek
900492 Radeon HD 7950 3GB


Y

VTX3D
HD7970 3GB GDDR5 VX7970 3GBD5-M2DHG
HD7970 3GB GDDR5 X-Edition VX7970 3GBD5-2DHX

Y
Y
VTX3D
HD 7950 3GB GDDR5 VX7950 3GBD5-2DH
X-Edition 3GB GDDR5 VX7950 3GBD5-2DHX

Y
Y
XFX
Double D FX-797A-TDBC HD 7970 Black Edition
XFX Double D FX-797A-TDFC Radeon HD 7970 3GB
Double D FX-797A-TDJC HD 7970 Black Edition
FX-797A-TNBC Radeon HD 7970 Black Edition 3GB
FX-797A-TNFC Radeon HD 7970 Core Edition 3G

N

N
N
Y
Y
XFX
Double D Black Edition FX-795A-TDBC 
Double D FX-795A-TDFC Radeon HD 7950 3GB
FX-795A-TNFC Radeon HD 7950 Core Edition 
Black Edition 3GB GDDR5 (FX-795A-TNBC)
Double D FX-795A-TDJC Radeon HD 7950 3GB

Y
Y
Y
Y
N

 
 

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