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Asus EAH4850 HTDI/512M/A Radeon HD 4850 Videocard Review

Asus EAH4850 HTDI/512M/A Radeon HD 4850 Videocard Review - PCSTATS
Abstract: Its a good time to be on the market for a new video card. After floundering in second place behind nVidia for the past few years, ATI's Radeon 48xx-series videocards promise to boost AMDs marketshare back up to a healthy margins by delivering fast framerates for a very competitive price.
 84% Rating:   
Filed under: Video Cards Published:  Author: 
External Mfg. Website: ASUS Nov 17 2008   V. Khamphilovong  
Home > Reviews > Video Cards > ASUS EAH4850 HTDI/512M/A

Overclocking the Radeon EAH4850

Overclocking Results:
Stock Overclocked
GPU (Core) Speed: 625 MHz 690 MHz
Memory Speed: (1000) 2000 MHz (1163) 2326 MHz DDR
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 Asus EAH4850 HTDI/512M/A videocard ships with its R770 GPU running at a default clock speed of 625MHz GPU. The 512MB of DDR3 memory runs at 1000Mhz (2000Mhz DDR). AMD makes overclocking its videocards pretty fun, well ever since the release of ATI Overdrive. PCSTATS' experience when overclocking the Radeon HD 3870 X2 was mixed, so perhaps this single GPU Radeon HD 4850 will yield much better overclocking results.... it is an ASUS videocard after all!

As usual, overclocking was done through the ATI Catalyst Control Center and ATI Overdrive which unlocks GPU and memory clock speed. 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 the appearance of artifacts, and then list the maximum stable and artifact-free overclocked speed the video card can attain.

The ATI RV770 GPU at the heart of the Asus EAH4850 HTDI/512M/A was slowly clocked up from 625MHz, to 640MHz, 660MHz and 680MHz without any sign of artifacts or instability. Sadly we weren't able to push the GPU much further, and it ultimately maxed out at 690MHz.

Overclocking the Asus EAH4850 HTDI/512M/A's 512MB of DDR3 memory was pretty straightforward. Starting at 1000MHz, the memory overclocked all the way to 1175MHz, but this killed the system. We lowered the memory to 1163MHz and the system remained pretty stable after that.

On a side note, the neat thing about ATI Overdrive is the Auto-tune function is that it will automatically raise clock speeds and check stability for you, and it's usually not that off. When the stability fails Overdrive will reset the card to the last clock settings. This is a quick way to test the limits of the overclocking but Overdrive does not truly stress the card as much as a 3D game would. The best setting for speed and stability was found to be about 10% up the upper limit that Overdrive finds.

A final stable result, has the settings set at 675Mhz for the the GPU Clock and 1100Mhz for the Memory. Anyway, on with the benchmarks!.

Prelude to Benchmarks:

The details of how the Asus EAH4850 HTDI/512M/A test system was configured for benchmarking - the specific hardware, software drivers, operating system and benchmark versions are indicated below. All benchmarks for the Asus EAH4850 HTDI/512M/A were run in Windows Vista Ultimate, the reference videocards 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 only test platform, so keep this in mind as you scan the benchmark results. In the second column are the general specs for the reference platforms this Radeon HD 4850 videocard is to be compared against. Please take a moment to look over PCSTATS test system configurations before moving on to the individual benchmark results on the next page.

PCSTATS Test System Configurations
Test System Reference System
Processor: Intel Core 2 Duo E6750 (775) AMD Athlon64 FX-62 (AM2)
Clock Speed:

14 x 200 MHz = 2.6 GHz

14 x 200MHz = 2.8MHz

MSI X48 Platinum (Intel X48 Express)

Foxconn C51XEM2 (NF 590 SLI)
Videocard: AsusRadeon EAH3870X2 1G
(Crossfire) ATI Radeon HD3870X2
Palit Radeon HD 4870X2
Asus Radeon EAH4850/HTDI/512MA
MSI Radeon R3870X2-T2D1G-OC

Asus EAX1900XTX/2DHTV/512M/A
Asus EAX1950PRO/HTDP/256M/A
Foxconn FV-N88SMCD2-ONOC
nVidia GeForce 8600GTS SLI
Gigabyte GV-NX85T256H SLI
Gigabyte GV-NX85T256H
Gigabyte GV-NX76GT256D-RH
Biostar Sigma-Gate GeForce 7600GS
Albatron 8600GT-256
Asus EN8800GT TOP/G/HTDP/512M/A
Palit 9600GT Sonic
Biostar V903GT52-NV1AN *

Memory: Corsair DOMINATOR Twin2X2048-1800C7D (DDR3)

Corsair Twin2X2048-6400C3 (DDR2)

Hard Drive: 74GB Western Digital Raptor WD740
CDROM: AOpen Combo 52x
Power Supply: PC Power & Cooling TurboCool 750W
Heatsink: Intel E6600 Reference Athlon64 FX-62 Reference Heatsink
Test System Setup:

Microsoft Windows Vista Ultimate 32-bit
Intel INF
Catalyst 8.8

Microsoft Windows XP Pro SP2
Microsoft Windows Vista Ultimate 32-bit*


3DMark Vantage
Quake 4
Call of Juarez
Lost Planet

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Contents of Article: ASUS EAH4850 HTDI/512M/A
 Pg 1.  Asus EAH4850 HTDI/512M/A Radeon HD 4850 Videocard Review
 Pg 2.  AMD Radeon HD 4850 Technology
 Pg 3.  Videocard Power Consumption Measurements
 Pg 4.  — Overclocking the Radeon EAH4850
 Pg 5.  Videocard Benchmarks: 3DMark06
 Pg 6.  DX10 Videocard Benchmarks: 3DMark Vantage, Crysis
 Pg 7.  DX10 Videocard Benchmarks: Call of Juarez
 Pg 8.  DX10 Videocard Benchmarks: Lost Planet
 Pg 9.  Videocard Benchmarks: FEAR
 Pg 10.  Advanced Videocard Benchmarks: Quake 4, FEAR
 Pg 11.  Advanced Video card Benchmarks: Crysis, Quake 4

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