Gigabyte GV-R477D5-512H-B PCSTATS Review - Overclocking, Power Draw, Test System Specs

Overclocking Results:

	stock	overclocked

gpu speed:	750 mhz	830 mhz
memory speed:	(800) 3200 mhz	(850) 3400 mhz
crossfire configuration
gpu speed:	750 mhz	830 mhz
memory speed:	(800) 3200 mhz	(850) 3400 mhz
if you're new to Overclocking and not sure what to do, check out these two excellent Guides for some pointers: Overclocking the CPU and Memory Overclocking the Videocard

The Gigabyte GV-R477DR5-512H-B videocard ships with its ATI 'RV740' GPU clocked at 750MHz and the 512MB of onboard GDDR5 memory running at 800MHz, or effectively quad-pumped to 3.2GHz.

As always, PCSTATS overclocked the videocard through ATI's Catalyst Control Center using ATI Overdrive. The fan was set to run at 100% from the start and PCSTATS started with the GPU first, pausing to test the results with a quick 3D benchmark before continuing. We take note of any stability problems or artifacts, then list the maximum stable and artifact-free overclocked speed the videocard achieves. We'll be using ASUS' P5E3 Premium Intel X48 motherboard for these overclocking tests, along with a nice set of Patriot DDR3-1866 low latency memory modules.

Given the ease with which PCSTATS overclocked ASUS' EAH4770 videocard in our last review, for the Gigabyte HD 4770 we decided to cut to the chase. The memory and GPU clock speeds were dialed up as high as possible from the get-go. The Radeon HD 4770 handled 830MHz GPU / 850MHz memory as if it was nothing, 3DMark06 passed without any artifacts or instability.

As you expect, the overclocking situation was dito for the two Radeon HD 4770 videocards running in Crossfire. Both graphics cards overclocked to 830MHz GPU / 850MHz memory without a problem. This is one of the nice things about mainstream videocards, there's often a lot of headroom built in so you can boost the speed of the videocard without much risk. Might as well enjoy all that Free performance in the games!

To show you exactly what kind of performance this translates to, PCSTATS will be including overclocked Crossfire benchmark results for 3DMark06 and 3DMark Vantage.

The details of how the Gigabyte GV-R477DR5-512H-B videocard was configured for benchmarking; the specific hardware, software drivers, operating system and benchmark versions are indicated below. All benchmarks for the videocard were run in Windows Vista Ultimate, the reference video cards were tested in both Windows XP and Vista for the DX10 benchmarks.

PCSTATS is in the process of making the transition to a Windows Vista and Intel CPU test platform, so keep this in mind as you scan the benchmark results. In the second column are the general specs for the reference cards this ATI Radeon HD 4770 videocard is compared against.

PCSTATS Test System Configurations

	test system	reference system #1	reference system #2
processor:	Intel Core 2 Duo E8400 (775)	Intel Core 2 Duo E6750 (775)	AMD Athlon64 FX-62 (AM2)
Clock Speed:	15 x 200MHz = 3.0GHz	14 x 200MHz = 2.6GHz	14 x 200MHz = 2.8GHz
Motherboards:	ASUS P5E3 Premium* (Intel X48 Express) MSI X48 Platinum (Intel X48 Express)	MSI X48 Platinum (Intel X48 Express)	Foxconn C51XEM2 (NF 590 SLI)
Videocard:	Gigabyte GV-R477D5-512HB* ASUS EAH4770 HTDI/512MD5/A ASUS EAH4890 HTDI/1GD5/A ASUS ENGTS250 DK Gigabyte GV-N96TSL-1GI	Palit Radeon HD 4870X2 ASUS Radeon EAH4850/HTDI/512MA MSI Radeon R3870X2-T2D1G-OC ASUS Radeon EAH3870X2 1G Diamond HD 3650 Pe 512 MSI R4830-T2D512-OC	ASUS EAX1900XTX/2DHTV/512M/A ASUS EAX1950PRO/HTDP/256M/A MSI NX8800GTX-T2D768E-HD Foxconn FV-N88SMCD2-ONOC MSI NX8800GTS-T2D320E-HD-OC nVidia GeForce 8600GTS SLI Foxconn 8600GTS-256 MSI NX8600GT-T2D256E-OC MSI NX8600GTS-T2D256E-OC Gigabyte GV-NX85T256H SLI Gigabyte GV-NX85T256H MSI NX7950GX2-T2D1GE MSI NX7900GTX-T2D512E Gigabyte GV-NX76GT256D-RH Biostar Sigma-Gate GeForce 7600GS Albatron 8600GT-256 MSI NX8800GT-T2D512E-OC ASUS EN8800GT TOP/G/HTDP/512M/A Palit 9600GT Sonic Biostar V903GT52-NV1AN *
Memory:	Corsair DOMINATOR Twin2X2048-1800C7D (DDR3) Patriot PDC32G1866LLK (DDR3)		Corsair Twin2X2048-6400C3 (DDR2)
Hard Drive:	74GB Western Digital Raptor WD740
CDROM:	ASUS BC-1205PT-BD Blu-Ray Drive
Monitor (1080p):	ASUS MK241 24" HD LCD
Power Supply:	PC Power & Cooling TurboCool 750W
Heatsink:	Intel E8400 Reference	Intel E6750 Reference	Athlon64 FX-62 Reference Heatsink
Test System Setup:	Microsoft Windows Vista Ultimate 32-bit Intel INF 9.0.0.1008 Catalyst 9.4 Forceware 182.08		Microsoft Windows XP Pro SP2 Microsoft Windows Vista Ultimate 32-bit*
Benchmarks:	3DMark06 3DMark Vantage FEAR Crysis Call of Juarez Lost Planet

Benchmark results are organized by GPU manufacturer first (AMD/ATI or nVidia), then by GPU generation, and then by GPU class (high end, mainstream, value). This approach provides a clearer view of how performance can differ from generation to generation, and class to previous generation. The product being tested is marked with the red colour bar.